Exhibit 4.21


                                                                    White & Case
                                                                        08/01/98

                                (Translation)

             CREDIT FACILITIES AGREEMENT DATED SEPTEMBER 27, 1995

                                (AMENDMENT NO. I)

                                     between

Nakornthai Strip Mill Public Company Limited          The Borrower

                                       and

The Industrial Finance Corporation of Thailand        The Lender/
                                                      The Facility Agent

Thai Farmers Bank Public Company Limited              The Lender

Siam City Bank Public Company Limited                 The Lender

The Government Savings Bank                           The Lender

First Bangkok City Bank Public Company Limited        The Lender

Nakornthon Bank Public Company Limited                The Lender

SCF Finance and Securities Public Company Limited     The Lender

First City Investment Finance and Securities Public   The Lender
Company Limited

IFCT Finance and Securities Public Company Limited    The Lender

                  Dated March 12, 1998


                                                                    White & Case
                                                                        08/01/98

                                    Appendix
                           (Attached to the Agreement)

Exhibit I         Copy of Letter of the Industrial Finance Corporation of
                  Thailand, as the Facility Agent, dated October 30, 1997 re:
                  the Approval and Consent from the Lenders to Procure the
                  Additional Financing

Exhibit II        Copy of Letter of the Industrial Finance Corporation of
                  Thailand dated December 12, 1997 re: the Extension of the
                  Period for the Approval and Consent to Procure the Additional
                  Financing

Exhibit III       Security Sharing Agreement

Exhibit IV        Copy of the Agreement to Transfer Credit between SCF Finance
                  and Securities Public Company Limited and Siam City Credit
                  Finance and Securities Public Company Limited dated July 2,
                  1997

Exhibit V         Copy of the Agreement to Transfer Credit among IFCT Finance
                  and Securities Public Company Limited, First City Investment
                  Finance and Securities Public Company Limited and the
                  Industrial Finance Corporation of Thailand dated December 29,
                  1997

Exhibit VI        The Sample of Calculation of Principal Amount according to the
                  Notes terms (Accreted Value)

Exhibit VI        Copy of Letter of Siam City Bank Public Company Limited dated
                  January 7, 1998 re: the Conversion of the US Dollars
                  Obligations to Baht Obligations


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                                    Schedule

Schedule A        The schedule of credit drawn by the Borrower


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              CREDIT FACILITIES AGREEMENT DATED SEPTEMBER 27, 1995

                                (FIRST AMENDMENT)

THIS AGREEMENT (the "CFA Amendment") is made on this 12th day of March 1998

BETWEEN

(1)   NAKORNTHAI STRIP MILL PUBLIC COMPANY LIMITED, a public limited company
      duly organized and existing under the laws of Thailand, having its
      registered office located at No. 9, UM Tower, 16th Floor, Ramkhamhaeng
      Road, Kwaeng Suanluang, Khet Suanluang, Bangkok, Thailand (hereinafter
      referred to as the "Borrower"), and

(2)   THE INDUSTRIAL FINANCE CORPORATION OF THAILAND of No. 1770 New Petchburi
      Road, Kwaeng Bangkapi, Khet Huaykwang, Bangkok Metropolis, (hereinafter
      referred to as "IFCT");

      THAI FARMERS BANK PUBLIC COMPANY LIMITED of No. 1 Soi Kasikornthai,
      Ratburana Road, Bangkok Metropolis, (hereinafter referred as "Thai
      Farmers");

      SIAM CITY BANK PUBLIC COMPANY LIMITED of No. 1101 New Petchburi Road,
      Kwaeng Makkasan, Khet Rajthevi, Bangkok Metropolis, (hereinafter referred
      to as "SCIB");

      THE GOVERNMENT SAVINGS BANK of No. 470 Phaholyothin Road, Kwaeng
      Samsennai, Khet Phayathai, Bangkok Metropolis, (hereinafter referred to as
      "the Government Savings Bank");

      FIRST BANGKOK CITY BANK PUBLIC COMPANY LIMITED of No. 20 Yukon 2 Road,
      Kwaeng Debhsirin, Khet Pomprap Sattruphai, Bangkok Metropolis,
      (hereinafter referred to as "First Bangkok City Bank");

      NAKORNTHON BANK PUBLIC COMPANY LIMITED of No. 90 North Sathorn Road,
      Kwaeng Silom, Khet Bangrak, Bangkok Metropolis, (hereinafter referred to
      as "Nakornthon");

      SCF FINANCE AND SECURITIES PUBLIC COMPANY LIMITED of No. 2922/209 Charn
      Issara Building 2, 16th Floor, New Petchburi Road, Kwaeng Bangkapi, Khet
      Huaykwang, Bangkok Metropolis, (hereinafter referred to as "SCF");


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      SIAM CITY CREDIT FINANCE AND SECURITY PUBLIC COMPANY LIMITED of No. 2
      Ploenchit Center Building, 8th - 16th Floor, Sukhumvit Soi 2, Sukhumvit
      Road, Kwaeng Klongtoey, Khet Klongtoey, Bangkok Metropolis, (hereinafter
      referred to as "SCF");

      FIRST CITY INVESTMENT FINANCE AND SECURITIES PUBLIC COMPANY LIMITED of No.
      2884 New Petchburi Road, Kwaeng Bangkapi, Khet Huaykwang, Bangkok
      Metropolis, (hereinafter referred to as "First City");

      IFCT FINANCE AND SECURITIES PUBLIC COMPANY LIMITED of No. 1770 Building 2,
      Industrial Finance Corporation of Thailand, 10th - 13th Floor, New
      Petchburi Road, Kwaeng Bangkapi, Khet Huaykwang, Bangkok Metropolis,
      (hereinafter referred to as "IFCTF"),

      (hereinafter, if not specifically called, collectively referred to as the
      "Lenders"; when specifically called "any Lender"; and when referred to as
      Thai Farmers, SCIB, First Bangkok City Bank and Nakornthon, they shall
      also include their International Banking Facilities under the
      notifications of the Ministry of Finance); and

(3)   THE INDUSTRIAL FINANCE CORPORATION OF THAILAND, in the capacity as the
      lead manager (hereinafter referred to as the "Facility Agent").

                                   WITNESSETH:

A.    The Borrower has received credit facilities from the Lenders, pursuant to
      Credit Facilities Agreement dated September 27, 1995 (hereinafter referred
      to as the "CFA") for the credit, in Baht and foreign currency (equivalent
      to Thai Baht), for an amount of approximately 11,000,000,000 Baht (Eleven
      Billion Baht), for the purposes of the construction, equipment and
      machinery expenses and operation of the hot-rolled coil project (the "Hot
      Mill"). As of December 31, 1997, the Borrower has drawn the facilities
      from the Lenders which includes the facilities in the forms of Letter of
      Credit and Bank Guarantee for Letter of Credit opening for an amount of
      306,813,904.95 (Three Hundred and Six Million Eight Hundred and Thirteen
      Thousand Nine Hundred and Four point Ninety Five) US Dollars. The credit
      facilities of 1,186,095.05 (One Million One Hundred and Eighty Six
      Thousand and Ninety Five point Zero Five) US Dollars is provided by the
      Lenders for the case that the value of the Deutch Mark is relatively high
      when compared to US Dollars and Baht for the amount of 3,300,000,000
      (Three Billion and Three Hundred Million) Baht as shown in Schedule A of
      this Agreement;

B.    The Borrower has studied and is confident that the production of the
      direct reduced iron and co-generation power (the "DRI Facility") and the
      downstream processing facilities for the production of high-quality
      pickled and oiled, cold-rolled, galvanized, and other value-added steel
      products (the "Finishing Mill") (collectively together with the Hot Mill,
      the "Mill") in addition to the production of __________________________
      will maximize the


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                                                                        08/01/98

      benefit to the Borrower. The Borrower therefore would like to procure
      financing from abroad to be used in the construction and the operation of
      the Mill, by (i) having NSM Steel Co., Ltd., a company incorporated under
      the laws of the Cayman Islands and in which the Borrower holds 100 percent
      of shares and NSM Steel (Delaware) Inc., a limited liability company
      incorporated under the laws of the State of Delaware, the United States of
      America, a wholly-owned subsidiary of NSM Steel Co., Ltd., acting as an
      agent of NSM Steel Co., Ltd., under the Agency Agreement (hereinafter
      referred to as "Note Issuer") issue secured notes and secured private
      placement notes (hereinafter collectively referred to as the "Notes"),
      (ii) issuing warrants to purchase ordinary shares concurrently with partly
      issuing the Notes and issuing warrants for a foreign company in
      consideration of technology know-how provided to the Borrower by them,
      (iii) issuing newly issued ordinary shares of the Borrower, and (iv)
      obtaining financing in the form of a revolving working capital facility
      (collectively, the "Additional Financing"). The proceeds from the
      Additional Financing will be used for the business of the Borrower.

C.    The Lenders agree to continue their financial support under the CFA.

D.    The Borrower received approval and consent from the Lenders to procure the
      Additional Financing under the letters of the Facility Agent dated October
      30, and December 12, 1997 which are shown as Exhibit I and Exhibit II,
      respectively. In addition, as required by the CFA, certain terms and
      conditions under the CFA must be amended in order to comply with the
      Additional Financing.

NOW THEREFORE, the Parties heretofore agree to enter into this Agreement in
accordance with the terms and conditions as follows:

1.    Definitions

      1.1   Unless it is specified otherwise in this Agreement, any term shall
            have the meaning ascribed to it pursuant to the CFA and the Security
            Sharing Agreement, which are shown as Exhibit III, which shall be
            deemed a part hereof.

      1.2   "Closing Date" means the date of which (a) the Note Issuer has
            received the proceeds from the offering of the Notes and maintained
            such proceeds so received in the Borrower's account(s) with bank(s)
            outside Thailand and (b) the holders of the Notes have accepted the
            mortgage of collateral jointly with the Lenders and (c) the Borrower
            has received the proceeds from the offering of newly issued ordinary
            shares and (d) the Lenders have been prepaid for the principal
            amount and interests remaining unpaid for an amount of 58,000,000
            (Fifty Eight Million) US Dollars at the date of closing together
            with the mortgage registration pursuant to (b) mentioned above.

      1.3   The provision in Section 1.1(l) of the CFA shall be repealed and
            replaced by the following:


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            "(l) 'Majority Vote of the Lenders': A resolution of at least 4
            (four) lenders, granting the facilities in aggregate of not less
            than sixty (60) percent of the total credit facilities under this
            Agreement."

      1.4   Headings are for convenience only and shall be ignored in construing
            this Agreement.

2.    Consent to Additional Financing

      2.1   Offering of the Notes, Warrant to Purchase Ordinary Shares and Newly
            Issued Ordinary Shares for the investors in the Notes

            The Lenders hereby allow the Note Issuer to issue the Notes to
            wholly sell to the investors abroad. The Notes shall be
            unconditionally and irrevocably guaranteed in the whole amount of
            obligations and provided with the collateral for the Noteholders by
            the Borrower. The gross proceeds received by the Note Issuer on the
            Closing Date prior to the deduction of expenses used in the
            Additional Financing is approximately 444,204,000 (Four Hundred
            Forty Four Million Two Hundred and Four Thousand) US Dollars and the
            principal amount of the Notes (including discount amount) is
            approximately 506,500,000 (Five Hundred and Six Million and Five
            Hundred Thousand US Dollars) as follows:

            2.1.1 Senior Mortgage Notes ("Portion A Notes"), having the
                  principal amount of 249,000,000 (Two Hundred and Forty Nine
                  Million) US Dollars and the gross proceeds the Note Issuer
                  will receive on the Closing Day of 225,594,000 (Two Hundred
                  Twenty Five Million Five Hundred and Ninety Four Thousand) US
                  Dollars at the interest rate of 12 (twelve) percent per annum
                  to be due on February 1, 2006. The Noteholders will share the
                  collateral in first priority jointly with the Lenders in
                  proportion to their debts and under the conditions of the
                  security sharing under Article 6 of this Agreement.

            2.1.2 Senior Subordinated Mortgage Notes (Senior Mortgage Notes
                  together with the Lenders and the holders of Portion A Notes,
                  entitled to be repaid following the holders of Portion A Notes
                  in the case of the collateral being enforced) ("Portion B
                  Notes") having the principal amount of 203,500,000 (Two
                  Hundred and Three Million and Five Hundred Thousand) US
                  Dollars and the gross proceeds the Note Issuer will receive on
                  the Closing Date of approximately 175,010,000 (One Hundred and
                  Seventy Five Million and Ten Thousand) US Dollars at the
                  interest rate of 12.25 (Twelve Point Twenty Five) percent per
                  annum to be due on February 1, 2008. The Noteholder will
                  receive the warrants to purchase ordinary shares of not less
                  than 128,834,361 (One Hundred and Twenty Eight Million Eight
                  Hundred and Thirty Four Thousand and Three Hundred and Sixty
                  One) units for the holders of Portion B Notes.


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            2.1.3 Private Placement Notes ("Portion C Notes") having the
                  principal amount of approximately 54,000,000 (Fifty Four
                  Million ) US Dollars and the gross proceeds the Note Issuer
                  will receive on the Closing Date of approximately 43,600,000
                  (Forty Three Million and Six Hundred Thousand) US Dollars at
                  the interest rate of 12.75 (Twelve Point Seventy Five) percent
                  per annum to be due on February 1, 2009. The holders of
                  Portion C Notes will receive the collateral ranked after the
                  Lenders and the holders of Portion A Notes and the holders of
                  Portion B Notes. In addition, the newly issued ordinary shares
                  of the Borrower of 64,417,180 (Sixty Four Million Four Hundred
                  and Seventeen Thousand and One Hundred and Eighty) shares in
                  aggregate at the par value of 10 (ten) Baht each shall be
                  allocated to the holders of Portion C Notes.

      2.2   Increase of Share Capital of the Borrower and the Issuance of the
            Warrants to Purchase the Ordinary Shares

            The Lenders hereby allow the Borrower and consent to issue
            additional ordinary shares of 300,000,000 (Three Hundred Million)
            shares, representing 34.8 (Twenty Four Point Eight) percent of fully
            diluted issued shares of the Borrower (the amount of existing and
            newly issued shares) as well as to amend the Memorandum of
            Association and/or the Articles of Association of the Borrower
            related thereto as follows:

            2.2.1 Private Placement of Newly Issued Ordinary Shares

                  Newly issued ordinary shares of 158,639,864 (One Hundred and
                  Fifty Eight Million Six Hundred and Thirty Nine Thousand and
                  Eight Hundred and Sixty Four) shares of 10 (Ten) Baht per
                  share for the value of 1,586,398,640 (One Billion Five Hundred
                  and Eighty Six Million Three Hundred and Ninety Eight Thousand
                  and Six Hundred and Forty) Baht shall be offered to specific
                  foreign investors. A portion of the newly issued shares,
                  totaling to 74,468,090 (Seventy Four Million Four Hundred and
                  Sixty Eight Thousand and Ninety) shares for the value of
                  744,680,900 (Seven Hundred and Forty Four Million Six Hundred
                  and Eighty Thousand and Nine Hundred) Baht will be allocated
                  by the Borrower as if they were fully paid to Steel Dynamics
                  Inc. ("SDI") that will grant the Borrower the right to use
                  technology and know-how in the production and operation of the
                  Mill, the secret information related to the production and the
                  administration of the Mill.

                  The remaining 84,171,774 (Eighty Four Million One Hundred and
                  Seventy One Thousand and Seven Hundred and Seventy Four)
                  shares shall be paid in cash in US Dollars currency equivalent
                  to the amount of 841,717,740 (Eight Hundred and Forty One
                  Million Seven Hundred and Seventeen Thousand and Seven Hundred
                  and Forty) Baht.


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            2.2.2 Private Placement of the Warrants

                  The warrants to purchase ordinary shares of not exceeding
                  128,834,361 (One Hundred and Twenty Eight Million Eight
                  Hundred and Thirty Four Thousand and Three Hundred and Sixty
                  One) units for the investors in Portion B Notes with the
                  exercised price of 10 (Ten) Baht per share. The exercise of
                  right shall be made after the period of not less than 1 (One)
                  year from the date of warrant issuance but not later than 10
                  (Ten) years from the date of warrant issuance. Additionally,
                  to approve the reservation of ordinary shares, totaling to
                  128,834,361 (One Hundred and Twenty Eight Million Eight
                  Hundred and Thirty Four Thousand and Three Hundred and Sixty
                  One) shares so reserved for the aforesaid exercise.

                  The warrants to purchase the newly issued ordinary shares of
                  the Borrower in the amount of 11,421,480 (Eleven Million Four
                  Hundred and Twenty One Thousand and Four Hundred and Forty)
                  units to SDI for the consideration of the technology of _____
                  and cold-rolled production. In this regard, SDI shall be
                  entitled to exercise its right to purchase the newly issued
                  ordinary shares at the price of 10 (Ten) Baht after a period
                  of not less than 1 (One) year from the date of warrant
                  issuance but not later than 10 (Ten) years from the date of
                  warrant issuance, provided that SDI shall be entitled to
                  exercise its right exclusively in the proportion of the
                  exercise of right of the holders of Portion B Notes.

      2.3   Obtaining Revolving Working Capital Facilities

            The Lenders hereby allow the Borrower to obtain the revolving
            working capital facility from The Banque National De Paris ("BNP")
            for the sum of approximately 125,000,000 (One Hundred and 'Twenty
            Five Million) US Dollars of which the Borrower granted the right
            from BNP for the credit facilities of not exceeding 150,000,000 (One
            Hundred and Fifty Million) US Dollars, to be used as working capital
            of the Borrower. In the business operation of the Borrower, BNP
            shall not be entitled to share any collateral with the Lenders and
            the holders of the Notes (the "Noteholders"), with the exception of
            receivables under the offtake agreements between the Borrower and
            Preusseg Handel GmbH dated November 19, 1997, and between the
            Borrower and Klockner Stahl-und Metall Handel GmbH entered into as
            of the same date and/or any obligations under the mentioned
            agreements.

            The proceeds the Borrower derived from the Additional Financing
            shall be used for the construction and operation of the Mill, the
            repayment of a portion of the Borrower's obligations to the Lenders
            hereunder, and the use in the business of the Borrower. The Borrower
            must submit reports and/or documents relating to the issuances of
            Notes and newly issued ordinary shares, such as minutes of the board
            of directors and/or of shareholders, trust indenture, offering
            memorandum, agreements or other documents relating to the Additional
            Financing to the Facility 


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            Agent to satisfy the Lenders that such Additional Financing is in
            compliance with the terms and conditions hereunder.

3.    The Lenders' Support

      The Lenders hereby confirm to continue their financial support of the
      Borrower pursuant to the CFA under the terms and conditions of the CFA and
      this Agreement.

4.    Prepayment of Principal and Outstanding Interests to the Lenders

      In consideration for the Lenders' consent for the Additional Financing,
      the Borrower agrees to use the proceeds derived from the offering of the
      Notes under Article 2.1 and/or from the offering of the newly issued
      ordinary shares under Article 2.2 above, concurrently with the release of
      the first priority collateral of the joint collateral by the Lenders on
      the Closing Date and arrange for the Noteholders entitled to jointly share
      collateral with the Lenders, the Borrower shall prepay the amount of
      50,000,000 (Fifty Million) US Dollars and the interests outstanding due on
      December 1, 1997 of 8,000,000 (Eight Million) US Dollars to the Lenders.
      In addition, within 5 (Five) business days from the Closing Date, the
      Borrower will pay to the Lenders the interest outstanding to be due on
      March 5, 1998 of 8,650,229.30 (Eight Million Six Hundred and Fifty
      Thousand Two Hundred and Twenty Nine Point Three Zero) US Dollars together
      with the late fee of 337,581.88 (Three Hundred and Thirty Seven Thousand
      Five Hundred and Eighty One Point Eighty Eight) US Dollars (excluding any
      other outstanding debts remaining unpaid to the Lenders, such as fees,
      advances and expenses incurred by the Borrower from seeking other sources
      of funds to be paid to the Lenders). The said prepayment shall be made by
      the Borrower to the Lenders pro rata it obliged to any Lender in
      accordance with the ratio of the commitment of any Lender of which any
      Lender is obliged to under the CFA. Failure to completely pay such
      proceeds within the time fixed shall be considered a default of the
      Borrower. The calculation of the amount of interest outstanding to be
      payable under this paragraph, the Lenders used the approximate exchange
      rate equal to 43 (Forty Three) Baht against 1 (One) US Dollar. Therefore,
      the payment of such interest may be adjusted according to the exchange
      rate of the date of actual payment. Prepayment of the outstanding amount
      after deducting the principal amount shall be made in 12 (twelve)
      installments of which the amount payable in each installment shall be
      decreased pro rata. The principal previously required to be paid in the
      thirteenth installment (after pro rata deducting the prepaid principal)
      pursuant to Article 7 attached to the CFA shall be pro rata averaged with
      the first twelve installments. The Borrower agrees to repay the principal
      of the twelfth installment at the same date as the eleventh installment.

      The calculation of such ratio of the commitment of any Lender obligated
      shall convert the debts from US Dollars into Thai Baht based upon the
      average selling rates of US Dollars of IFCT and Thai Farmers Bank at 11:00
      a.m. 2 (two) business days before the prepayment date. Provided that, the
      prepayment made to Thai Farmers Bank, Siam City Bank, First Bangkok City
      Bank and Nakornthon Bank shall be, applied toward the Baht 


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      Facility first. If there is still a remaining sum, then it can be applied
      toward the US Dollars Facility for such four lenders.

      In prepaying the principal amount and interest outstanding to the Lenders
      as mentioned in the first paragraph, the Borrower shall arrange for the
      proceeds derived from the offering of the Notes of the Note Issuer and/or
      from the offering of newly issued ordinary shares of the Borrower to pay
      the Lenders through the account of Thai Farmers Bank, New York Branch, USA
      maintained with The Chase Manhattan Bank and Thai Farmers Bank, New York
      Branch, USA will further transfer to any Lenders according to the schedule
      specified by such Lenders.

5.    Covenants of the Borrower

      Due to the fact that to provide for the Additional Financing caused the
      changes of certain covenants of the Borrower, the Lenders have agreed to
      waive and amend the following covenants in the CFA as follows:

      5.1   Affirmative covenants under Article 11.1 (a) paragraph two and (d)
            of the CFA shall be repealed and the conditions provided that the
            Borrower has to maintain the debt and equity ratio of which the
            Lenders specifying for approving the bridge financing from First
            Bangkok City Bank under Article 9 hereunder.

            The non-specification of debt and equity ratio under the first
            paragraph shall be limited to only the debt establishment in this
            Additional Financing.

      5.2   The following provision shall be added as paragraph two of Article
            11.2 of the CFA.

            "The provisions of (d) through to (h) above shall not apply to any
            acts of the Borrower in relation to the Additional Financing under
            the principles set forth in this CFA Amendment, the Security Sharing
            Agreement".

      5.3   The Lenders hereby allow the Borrower to unconditionally and
            irrevocably guarantee the whole indebtedness of the Notes for the
            payment and/or repayment of the principal amount, interests,
            advances, fees and other expenses which currently have or shall have
            in respect of the Notes.

6.    Security and Security Sharing

      6.1   The provisions of Articles 12, 13, 18.3 and any provisions of the
            CFA in relation to security and security sharing shall be repealed
            and replaced with the Security Sharing Agreement among the Borrower,
            the Lenders, the Trustee and the Collateral Agent, and the Security
            Documents, in the form of Exhibit III.

      6.2   The Lenders allow the Noteholders to share with Lenders all
            collateral which the Lenders currently have or shall have pursuant
            to the CFA and for the Security 


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            Sharing Agreement (as defined below), including but not limited to
            the following agreements:

            (1)   pledge of accounts;
            (2)   pledge of permitted investments;
            (3)   pledge of machinery;
            (4)   assignment of performance bonds;
            (5)   assignment of insurance (and/or the conditions providing for
                  the Lenders and the Noteholders to be co-beneficiaries under
                  the Insurance Agreement);
            (6)   conditional assignment of accounts;
            (7)   conditional assignment of project agreements;
            (8)   mortgage of land and buildings;
            (9)   mortgage of machinery; and
            (10)  security interest over Offshore Accounts (except the account
                  of the proceeds derived from the offering of Notes).

      (hereinafter referred to as the "Joint Collateral"). The Lenders and the
      holders of Portion A Notes and Portion B Notes ("Senior Secured
      Creditors") will share equally and ratably the Joint Collateral to the
      obligated amount of which the Borrower is required to pay to the Lenders
      and the holders of Portion A and Portion B Notes under the CFA and terms
      of the Notes, respectively (hereinafter the debts of the Lenders and the
      debts of the Portion A and Portion B Notes collectively referred to as "
      Senior Secured Obligations"). The Lenders allow the holders of Portion C
      Notes to the security following from the Senior Secured Creditors in the
      Joint Collateral ("Second Secured Creditors"), at any time there is a
      default causing the enforcement of the collateral. However, the
      obligations of which the Noteholders entitled to jointly share with the
      Lenders shall be in accordance with the calculation of accreted value of
      obligations, past due interest of the Notes and tax liability related to
      such portion of Notes (if any) after deducting by the proceeds maintained
      in the offshore account(s) of the Borrower solely derived from the
      offering of Notes of the Note Issuer ("Collateral of Notes") at any time
      there is the enforcement of Joint Collateral.

      The Lenders and/or the Facility Agent acting as the agent of the Lenders
      and the Borrower, agrees to enter into a security sharing agreement (the
      "Security Sharing Agreement") with The Chase Manhattan Bank acting as the
      Noteholders' representative (the "Trustee") which was registered in the
      global note certificate and also acting as the collateral agent
      ("Collateral Agent") having the obligations and responsibilities under the
      Security Sharing Agreement as shown in Exhibit III as well as any relevant
      agreements or documents.

      6.3   On the Closing Date, the Lenders shall arrange for the Senior
            Secured Creditors to be secured creditors in the Joint Collateral by
            being jointly the first Co-Mortgages of land and buildings of the
            Borrower, being co-pledgees and co-assignee of relevant rights and
            benefits under any agreements of which the Borrower may be 


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            entitled to for being the security of the Borrower's obligations
            under the CFA and the Notes, respectively and in order that the
            Lenders and the Noteholders receive equally and ratably security
            sharing of Senior Secured Obligations. The Lender must be pre-paid
            with the principal amount and interests outstanding under Article 4
            at the same time of such process. The holders of Portion C Notes
            shall be arranged for being the Second Secured Creditors in the
            Joint Collateral.

            6.3.1 The Borrower shall provide the secured property to be pledged,
                  mortgaged with the Lenders and the Trustee in accordance with
                  the forms and conditions jointly specified by the Facility
                  Agent and the Collateral Agent under the Security Sharing
                  Agreement as follows:

                  (a)   The Borrower shall register the mortgage of immovable
                        property to secure the obligations including interests
                        and fees under the CFA and under three portions of
                        Notes;

                  (b)   The Borrower shall pledge all of its machinery including
                        the machinery in DRI Project and Finishing Mill to
                        secure the obligations to the Lenders and the
                        Noteholders.

                  If the aforesaid pledged machinery may be registered, the
                  Borrower must arrange for the ownership registration according
                  to the laws with the machinery Registrar as soon as possible.
                  After such registration, the Borrower shall immediately
                  arrange for the mortgage registration to the Lenders and
                  Noteholders in place of pledge. For machinery promoted under
                  the Investment Promotion Act, the Borrower shall arrange for
                  the prior approval to mortgage such machinery from the Board
                  of Investment.

                  In the event there is a request from the Collateral Agent, the
                  Borrower shall assign the Collateral Agent to arrange for the
                  registrations of machinery ownership and/or machinery
                  mortgage. In this regard, the Borrower shall deliver and sign
                  any documents in order that the Collateral Agent will be able
                  to arrange for the aforesaid registrations on behalf of the
                  Borrower for the benefit of the Lenders and the Noteholders.

                  Other than the immovable property and machinery so mortgaged
                  or pledged by the Borrower to the Lenders and the Noteholders
                  to secure the Secured Obligations, the machinery of which any
                  Lender holds ownership during the trust receipt transaction
                  shall be deemed as the holding of ownership for the benefits
                  of the Lenders and the Noteholders.

            6.3.2 The Borrower shall provide risk insurance for the construction
                  buildings and machinery of the project during the construction
                  and the installation of machinery according to the progress of
                  the project with the insurance company approved by the
                  Collateral Agent for an insured amount as the Collateral Agent
                  deems appropriate. It must be specified in the insurance


                                      -13-


                                                                    White & Case
                                                                        08/01/98

                  policy that the Lenders and the Collateral Agent are the
                  beneficiaries. Such policy shall be delivered to the
                  Collateral Agent for safe keeping. The policy shall be in
                  effect until the Lenders are totally repaid the obligations
                  under the Agreement. In this regard, the Borrower shall be
                  responsible for the premiums and other expenses.

            6.3.3 The Borrower shall assign any rights and benefits it entitled
                  to receive under the terms of the sale of machinery and/or
                  construction agreements, including but not limited to the
                  assignment of refund bond, down payment guarantee/bond or the
                  assignment of performance guarantee/bond, and/or assign any
                  other rights and benefits the Borrower entitled to receive
                  under all other agreements with any persons to the Collateral
                  Agent.

            6.3.4 The Borrower shall arrange for the pledge of onshore accounts
                  of which the Borrower has to open a savings account and/or any
                  other account with The Chase Manhattan Bank, Bangkok Branch,
                  and/or the pledge of promissory notes or other instruments
                  issued by the aforesaid bank or other bank to be further
                  agreed among the Borrower, the Lenders and the Collateral
                  Agent for the investment of the Borrower for being the
                  additional security. Furthermore, the Borrower shall make the
                  conditional assignment of such accounts to the Collateral
                  Agent.

            6.3.5 If there is the loss, deterioration or depreciation of the
                  secured property under Article 6.3.1, the Facility Agent
                  and/or the Collateral Agent is entitled to request the
                  Borrower to provide additional property be mortgaged, pledged
                  or additionally secured with a value of not less than the
                  security lost, deteriorated or depreciated within the time
                  fixed by the Facility Agent and/or the Collateral Agent.

            6.3.6 The Borrower agrees to pay fees, stamp duties, taxes, expenses
                  and other costs used in arranging for the security hereof
                  including all fees, stamp duties, taxes, expenses and other
                  costs necessary for the enforcement of pledge and mortgage and
                  the enforcement of obligations or any other security
                  respectively. The Borrower shall indemnify any Lenders,
                  Trustee and/or the Collateral Agent for all taxes under the
                  law of Investment Promotion incurred by them in the
                  enforcement of the mortgage of machinery so promoted.

            6.3.7 The Borrower and the Lenders agree that, for the benefit of
                  the Lenders and the Noteholders, the Collateral Agent shall be
                  a receiver and keep evidence of ownership or other rights over
                  the secured property, including but not limited to the
                  original of land title deeds, the registration showing the
                  construction, the ownership registration of machinery, the
                  mortgage, the pledge as well as the guarantees, policies, any
                  assignment of rights agreements and all other agreements and
                  documents relevant to the security under this Agreement. The
                  Borrower shall arrange for the 


                                      -14-


                                                                    White & Case
                                                                        08/01/98

                  Borrower and/or the Collateral Agent to inform, deliver,
                  notify or arrange for any actions to the Collateral Agent in
                  order that it will receive information and copies of
                  correspondence and/or other documents relevant to the
                  security.

      6.4   Notwithstanding any provisions of this Article 6, the Joint
            Collateral shall exclude the co-generation facility (the "Co-Gen
            Facility") to be constructed on the Borrower's land (of which such
            land is still the Joint Collateral under Article 6.3.1 above) and
            co-generation facility (hereinafter referred to as "Co-Gen
            Facility"). The Co-Gen Facility shall be funded by Enron Corporation
            for the amount of 20,000,000 (Twenty Million) US Dollars and the
            Borrower shall allocate a sum of 15,500,000 (Fifteen Million and
            Five Hundred Thousand) US Dollars of the proceeds derived from the
            Note Offering to lend to Enron Corporation at the interest rate to
            be further agreed between the parties for using in the construction
            and the operation of the Co-Gen Facility. The Borrower is in the
            process of consideration and negotiation with Enron Corporation
            regarding details and conditions of the agreement and shall further
            inform the Lenders and shall receive approval from the Lenders.

            "Enron Corporations" shall include the group companies and/or
            related companies of Enron Corporation.

      6.5   Any payment and/or any withdrawal of funds from the Offshore
            Accounts of the Borrower, whether the account is for proceeds
            derived from Additional Financing, Notes Debt Reserve Service
            Account, Offshore Reserve Account and Offshore Sub-account, subject
            to the laws and regulations relevant to the control of currency
            exchange of Thailand may be made only for the following purposes:

            (a)   to prepay a principal amount and the interests outstanding to
                  the Lenders under Article 4 of this Agreement;

            (b)   to pay for expenses relating to the Additional Financing,
                  including but not limited to, financial advisory fees, fees
                  payable to underwriters, legal and other professional fees,
                  traveling expenses and others;

            (c)   to pay for supplies, materials, equipment and machinery and/or
                  fees to suppliers and/or contractors outside Thailand and/or
                  those payable in foreign currencies;

            (d)   to pay interests on the Notes to Noteholders under the terms
                  of the Notes when they become due including the additional
                  amount for taxes (if any) to the government agencies;

            (e)   to pay the management fee under the Management Agreement;


                                      -15-


                                                                    White & Case
                                                                        08/01/98

            (f)   for loan for the construction of the Co-Gen Facility under
                  Article 6.4 above;

            (g)   to repay principal amounts and/or past due interests to
                  Noteholders pursuant to the terms of the Notes;

            (h)   to deposit the amount equal to the outstanding under the
                  bridge facility to the First Bangkok City Bank under Article 9
                  of this Agreement;

            (i)   to deposit as a security and/or to purchase promissory notes
                  and pledge them with IFCT and/or any Lenders jointly grants
                  the facilities with IFCT equal to the outstanding amount under
                  the letters of credit pursuant to packing credit under Article
                  10 of this Agreement; and

            (j)   to transfer funds to onshore accounts to be used as working
                  capital for the Mill on an as-needed basis including bringing
                  proceeds to repay a principal amounts and/or interests to the
                  Lenders under the CFA and this Agreement.

7.    Priority of Payments

      In making payment of the obligations under the CFA, this Agreement and the
      conditions of the Notes which become due. the Company shall allocate the
      proceeds to be repaid at each installment to the Lenders and Noteholders
      according to the following:

      First Payment of interests which become due and outstanding in such
      respective installment under the CFA to the Lenders;

      Second Payment of Fifty (50) percent of the principal amount due under the
      CFA to the Lenders;

      Third Payment of interest which becomes due on the Notes to Noteholders;

      Fourth If there is still a sum remaining, such sum will be used for the
      payment of principal amount due under the CFA (the balance from the second
      payment) to the Lenders.

      Such priority of payments shall not change the events of default of the
      Borrower as specified under the CFA, except for the case that the Borrower
      is unable to pay the fourth priority due to the lack of sufficient funds,
      it shall not constitute a default under the CFA. Any principal amount in
      this fourth priority of any installments that has not been paid will be
      averaged over the remaining repayment installments pro rata to the
      outstanding principal in each installment. Nevertheless, the Borrower must
      repay the entire principal amount within the twelfth repayment
      installment, otherwise, it shall constitute a default. Any events other
      than the above mentioned shall be considered an event of default pursuant
      to the provisions of the CFA in all respects.


                                      -16-


                                                                    White & Case
                                                                        08/01/98

      However, this Article 7 shall not apply to the case of an enforcement of
      obligations and of the collateral which shall be in compliance with
      Article 6 above and Security Sharing Agreement.

8.    Use of Cash Flow Sweep for Prepayment

      The Borrower shall provide for the use of Cash Flow Sweep as prepayment
      under the CFA to any Lenders pro rata to the outstanding principal in each
      installment for the remaining installments on the date of such payment.

      The term "Cash Flow Sweep" shall mean a sum equal to Fifty (50) percent of
      the EBITDA which derives from each related financial year of the Borrower
      after deduction of interest expenses, plus debt mandatory amortization,
      taxation and maintenance capital expenditures in such financial year,
      beginning after December 31, 1999.

      In addition "EBITDA" means net profits of the Borrower before deducting of
      interest expenses, taxation, depreciation and amortization of such
      financial year.

      The Lenders agree to waive prepayment fees under Article 7.5 of the CFA in
      the case that the prepayment is made from (a) proceeds derived from the
      offering of the Notes and/or increase of the Borrower's share capital
      under Article 2, or (b) Cash Flow Sweep under this Article 8 of this
      Agreement.

9.    Bridge Finance Granted by First Bangkok City Bank

      The Lenders hereby consent and ratify the Borrower's receipt of a bridge
      financing from First Bangkok City Bank in the form of letters of credit,
      trust receipts, the letter of guarantee and an aval of notes in Baht and
      foreign currencies calculated based on the exchange rate as of October 11,
      1997 for the amount of 400,000,000 Baht (Four Hundred Million Baht). On
      the Closing Date, First Bangkok City Bank shall release a second mortgage
      of land and buildings, machinery and equipment of which the Borrower has
      registered a second mortgage provided that the proceeds derived from the
      offering of Notes shall be repaid for such obligations by allocating an
      amount equal to the outstanding amount of the unpaid obligations of a
      bridge financing to be maintained and pledged with First Bangkok City Bank
      to secure any obligations under this bridge financing, In this regard,
      First Bangkok City shall release the personal guarantees of Mr. Sawasdi
      Horrungruang and Mr. Chamni Janchai in relation to this credit and release
      the pledge of inventories and raw materials.

10.   Packing Credit Facility Granted by IFCT

      The Lenders hereby consent to the Borrower's receipt of credit facility
      from IFCT, the facility which export and Import Bank of Thailand ("Thai
      Exim Bank") derived from Commerce Bank, Germany in the form of packing
      credit for the amount of 10,000,000 US Dollars (Ten Million US Dollars).
      The credit has been granted to finance the import and export activities.
      The financing period shall not exceed 180 days for each letter of credit.


                                      -17-


                                                                    White & Case
                                                                        08/01/98

      IFCT will prescribe the interest rate and shall later inform the Borrower.
      Upon the subsidiary of the Borrower or the agent of such subsidiary's
      receipt of the proceeds from the Offering of the Notes, under Article 2.1.
      On the Closing Date, IFCT agrees to release a second mortgage of land and
      buildings for the Borrower concurrently with the proceeds the Borrower
      derived from the Offering of Notes by the Note Issuer is repaid for such
      obligation to IFCT and/or the Borrower has allocated an amount equal to
      the outstanding of the letter of credit used and charge fee in the case
      there is a default with IFCT and/or Thai Exim Bank at the rate of 5.5
      (Five Point Five) percent per annum of such amount by depositing and/or
      purchasing promissory notes and pledging them with IFCT to guarantee the
      repayment of obligations under the packing credit and release the pledge
      of inventories and raw materials, provided that the Borrower shall comply
      with the conditions specified by Thai Exim Bank and/or Commerce Bank.

      On the Closing Date and upon the allocation of amount to guarantee the
      obligations to IFCT, IFCT shall release the personal guarantees by Mr.
      Sawasdi Horrungruang and Mr. Chamni Janchai and/or any other person who is
      the guarantor of such credit.

      In addition, the Parties of this Agreement acknowledge and agree that IFCT
      may allocate the packing credit to the other Lenders and/or request such
      lender to guarantee the obligations hereof. In this case, such lender
      shall have the rights and obligations as IFCT in all respects.

11.   Transfer of Rights and Obligations of SCF and Siam City Credit to Siam
      City Bank

      SCF and Siam City Credit transferred all their rights and obligations
      under the CFA to Siam City Bank in respect of the commitment to extend
      credit of 137,151,480 (One Hundred Thirty Seven Million One Hundred Fifty
      One Thousand Four Hundred and Eighty) Baht each to the Borrower and such
      respective amount has already been drawn by the Borrower as of the date of
      this Agreement. The two lenders., Siam City Bank and the Borrower entered
      into an agreement dated as of July 2, 1997, as per Exhibit IV to this
      Agreement, to effect such transfer of rights and obligations, including
      the right over the relevant Onshore Collateral, under the CFA and the
      Borrower had acknowledged and agreed with such transfer of rights and
      obligations.

12.   Transfer of Rights and Obligation of FCI and IFCTF to IFCT

      FCI and IFCTF transferred all of their rights and obligations under the
      CFA pursuant to the Agreement to Transfer Credit dated December 29, 1997
      as per Exhibit V to this Agreement. The transferred rights and obligations
      include, but are not limited to, the right to the repayment of all
      obligations of the Borrower under the CFA and the right over the Onshore
      Collateral under the terms of the CFA and CFA Amendment. FCI and IFCTF are
      thus no longer creditors of the Borrower. Except the obligations relevant
      and necessary to provide the security for IFCT for such transferees'
      obligations. When this Agreement becomes effective, the terms "the
      Lenders" or "Each of Lenders" or "Group of Lenders" under the CFA, this
      Agreement and Security Sharing Agreement shall not include FCC and IFCTF.


                                      -18-


                                                                    White & Case
                                                                        08/01/98

13.   Changes in the Conditions of the Undrawn Portion of Siam City Bank

      The Lenders hereby provide consent for Siam City Bank to change certain
      terms in respect of the undrawn facility of 10,334,976.57 (Ten Million
      Three Hundred Thirty Four Thousand Nine Hundred Seventy Six Point Fifty
      Seven) US Dollars, as follows:

      13.1  The amount of 2,629,050.00 US Dollars (Two Million Six Hundred
            Twenty Nine Thousand and Fifty US Dollars) shall be drawn in Thai
            Baht for the amount equivalent to 105,963,847.55 Baht (One Hundred
            Five Million Nine Hundred Sixty Three Thousand Eight Hundred Forty
            Seven Point Fifty Five Baht) under the following basis of
            calculation:

            (1)   For obligations under letters of credit, the exchange rate of
                  Thai Farmers Bank on the date Thai Farmers Bank converts the
                  obligations thereunder which become due from the foreign
                  currency into Baht.

            (2)   In case the obligations are not under the letters of credit,
                  the average exchange rate of Siam City Bank of 2 business days
                  before the date the Borrower requests in writing for the
                  drawdown.

      13.2  The undrawn amount of 7,705,926.57 (Seven Million Seven Hundred Five
            Thousand Nine Hundred Twenty Six Point Fifty Seven) US Dollars, SCIB
            may make available to the Borrower the amount in US Dollars and/or
            Bhat. In case Siam City Bank provides the loan in Baht, the basis
            for calculating the equivalent amount in Baht shall be as follows:

            (1)   In case the amount is granted according to the Drawdown
                  Schedule, Siam City Bank shall use its average exchange rate
                  of 2 business days before the date of drawdown.

            (2)   In case the amount is granted after the Drawdown Schedule, the
                  exchange rate shall be in accordance with Article 13.1 above.

            (3)   The Lenders grant a consent and the Borrower agrees to let the
                  Thai Farmers Bank, First Bangkok City Bank and IFCT allow the
                  Borrower to drawdown in US Dollars and/or Baht.

14.   Schedule of Principal Repayment

      The schedule of principal repayment under the CFA shall be repealed. The
      Facility Agent shall prepare, from time to time, the new schedule of
      principal repayment if there are changes caused by (1) the principal
      repayment before the due date as specified under Article 4, (2) the fourth
      sharing of principal under Article 7, (3) the principal repayment before
      the due date under Article 8, (4) the transfer of credit facility under
      Article 11 and (5) the transfer of all rights and obligations between some
      of the Lenders under Article 12. The schedule newly prepared deems a part
      hereof.


                                      -19-


                                                                    White & Case
                                                                        08/01/98

15.   Defaults

      Before the Effective Date of this CFA Amendment and the Security Sharing
      Agreement under Article 16, the Lenders covenant that:

      (1)   the Lenders will waive any and all defaults under Article 14.1
            and/or Article 18.3 of the CFA that occurred before the effective
            date of the CFA Amendment, including but not limited to notify an
            event of default, to certain litigation against the Borrower who is
            in default under Article 14 of the CFA, including but not limited to
            (a) the Borrower's use of Facilities drawn under the CFA, in the DRI
            Facility and the Finishing Mill and (b) certain litigation against
            Mr. Sawasdi Horrungruang, in his personal capacity as guarantor;

            The provision in the first paragraph shall not apply if this
            Agreement and Security Sharing Agreement are null and void and even
            though this Agreement and the Security Sharing Agreement are in
            effect but a default is constituted under the CFA and/or this
            Agreement, the Lenders reserve the right to undertake with the
            Borrower under the CFA or this Agreement.

      (2)   the increased value added tax rate imposed by Thai governmental
            authorities is not considered a material change under the CFA;

      (3)   any events occurring prior to the effective date of the CFA
            Amendment and the Security Sharing Agreement shall not be used to
            preclude the drawdown of the loan;

      (4)   the Lenders shall give consent for the amendment to the Memorandum
            and Articles of Association to the extent required to effect or
            facilitate the Additional Financing of the Borrower and give consent
            to the Borrower for (a) providing collateral to Noteholders pursuant
            to the terms and conditions of the Security Sharing Agreement as
            specified under Article 2 of this Agreement, (b) providing a
            guarantee for the Offering of the Notes and (c) changing of the
            executive officers of the Borrower to be in compliance with the
            agreement of the Additional Financing.

16.   Effective Date of this Agreement

      The Parties agree to execute the CFA Amendment, Security Sharing Agreement
      and the Security Documents prior to the Closing Date. As a condition
      precedent, these two Agreements shall come into effect only upon:

      (i)   the Subsidiary of the Borrower receiving the proceeds from the
            Offering of the Notes and the Borrower receiving the proceeds from
            the increase of share capital; and


                                      -20-


                                                                    White & Case
                                                                        08/01/98

      (ii)  the Borrower's arrangement for the Noteholders to share the Onshore
            Collateral with the Lenders under the laws and/or regulations of the
            governmental agencies concurrently with the prepayment of the
            principal before the Repayment Schedule and the interests remaining
            unpaid under the CFA, Article 4.

17.   Resolution of the Lenders

      Article 14.2(a)(3) of the CFA shall be repealed and be replaced by the
      following:

      "Article 14.2

      (a)   

      (3)   In taking any legal action and/or enforcing the pledge and/or
            enforcing the mortgage and/or other rights under the CFA, the
            Security Sharing Agreement and the Security Documents and/or
            enforcing the other property of the Borrower and/or institution of
            claims or a court case against the Borrower, the majority vote of
            the Lenders pursuant to the CFA is required. The enforcement of
            collateral shall be in accordance with the agreement under the
            Security Sharing Agreement as per Exhibit III"

18.   Others

      18.1  This Agreement shall be deemed a part of the CFA. Should there be
            any conflicts or differences of the terms between the two
            agreements, the terms of this Agreement shall prevail. The
            provisions other than those so amended shall be in accordance with
            the CFA.

This Agreement is made in 10 (Ten) copies with the same contents. All parties
have read the contents of this Agreement thoroughly and found them complete and
correct according to their intention and therefore affixed their signatures as
evidence. Each party retains one copy of the Agreement.


                                      -21-


                                                                    White & Case
                                                                        08/01/98

       Nakornthai Strip Mill Public Company Limited        Borrower

                                                           Chairman of the Board
      Sign     /s/ Sawasdi Horrungruang
           -----------------------------------------
                (Mr. Sawasdi Horrungruang)


      Sign     /s/ Chamni Janchai                          Managing Director
           -----------------------------------------
                   (Mr. Chamni Janchai)

      The Industrial Finance Corporation of Thailand       Lender


      Sign     /s/ Anothai Taechamontri
           -----------------------------------------
                (Mr. Anothai Taechamontri)

         Thai Farmers Bank Public Company Limited          Lender


 Sign          /s/ Siripong Kalayaruj                      Position:  Director
      -----------------------------------------
                 (Mr. Siripong Kalayaruj)

           Siam City Bank Public Company Limited           Lender


 Sign          /s/ [ILLEGIBLE]                  Position:
      -----------------------------------------
           (                                  )

                The Government Savings Bank                Lender


      Sign     /s/ [ILLEGIBLE]
           -----------------------------------------
           (                                  )

      First Bangkok City Bank Public Company Limited       Lender


      Sign     /s/ [ILLEGIBLE]
           -----------------------------------------
                (                         )


                                      -22-


                                                                    White & Case
                                                                        08/01/98

          Nakornthon Bank Public Company Limited           Lender


      Sign     /s/ [ILLEGIBLE]
           -----------------------------------------
           (                                  ) 

     SCF Finance and Securities Public Company Limited     Lender


      Sign     /s/ [ILLEGIBLE]
           -----------------------------------------
           (                                  )

               Siam City Credit Finance and                Lender
              Security Public Company Limited


      Sign     /s/ [ILLEGIBLE]
           -----------------------------------------
           (                                  )

   First City Investment Finance Public Company Limited    Lender


      Sign     /s/ [ILLEGIBLE]
           -----------------------------------------
           (                                  )

    IFCT Finance and Securities Public Company Limited     Lender


      Sign     /s/ [ILLEGIBLE]
           -----------------------------------------
           (                                  )


                                      -23-