SHARE PURCHASE AGREEMENT

     This Share Purchase Agreement ("Agreement"),  dated as of December 20, 2001
among Carl and Edna  Urich,  Mark Urich,  ("Sellers"),  World  Envirotech,  Inc.
("WEI"), and Xin Net Corp. ("Buyer").


                              W I T N E S S E T H:


        A. WHEREAS, WEI is a corporation duly organized under the laws of the
           State of Colorado.
        B. WHEREAS, Buyer wishes to purchase 3,882,700 of the outstanding common
           shares of WEI free and clear of liens
        C. WHEREAS, prior to the transaction Buyer is not an affiliate of WEI.


         NOW, THEREFORE, it is agreed among the parties as follows:

                                   ARTICLE I

                                The Consideration

     1.1 Subject to the  conditions  set forth  herein,  Sellers  shall sell and
Buyer shall purchase  3,882,700  shares of common stock of WEI. The transactions
contemplated by this Agreement shall be completed  simultaneously  herewith. The
purchase price for the shares to be paid by Buyer to Sellers is $200,000 in cash
(the "Consideration") which shall be paid as follows: cash at closing of $66,666
to Carl  and  Edna  Urich,  $133,334  to  Mark  Urich,  and  upon  the  proposed
acquisition of ProtectServe Pacific Ltd. of Hong Kong, Buyer shall issue 100,000
shares of restricted common stock (post-reverse  split) to Sellers to be divided
as follows: Carl and Edna Urich 33,333 shares and 66,667 shares to Mark Urich.

                                   ARTICLE II

                        Closing and Conveyance of Shares

     2.1 The Purchase Shares shall be delivered and conveyed by Sellers to Buyer
simultaneously  herewith,  with duly executed stock powers,  upon receipt of the
Consideration by Sellers.



         2.2 Closing hereunder with delivery of the consideration and shares
shall occur on or before December 21, 2001 @ 5pm MST. Closing may occur through
use of Federal Express and wire transfer.

                                  ARTICLE III

         Representations, Warranties and Covenants of Sellers as to WEI

         Sellers and WEI each hereby, jointly and severally, represent, warrant
and covenant to Buyer as follows:

     3.1 WEI is a  corporation  duly  organized,  validly  existing  and in good
standing  under the laws of the State of Colorado,  and has the corporate  power
and  authority  to carry  on its  business  as it is now  being  conducted.  The
Articles of Incorporation and Amendments and Bylaws of WEI, copies of which have
been delivered to Buyer, are complete and accurate, and the minute books of WEI,
copies of which have also been  delivered to Buyer,  contain a record,  which is
complete  and  accurate  in all  material  respects,  of all  meetings,  and all
corporate actions of the shareholders and Board of Directors of WEI.

     3.2 The  authorized  capital stock of WEI consists of 50,000,000  shares of
common stock. There are 5,402,700 shares of Common Stock issued and outstanding.
All such  shares of  capital  stock of WEI are  validly  issued,  fully paid and
nonassessable.  WEI has no  outstanding  options,  warrants,  or other rights to
purchase, or subscribe to, or other securities  convertible into or exchangeable
for any shares of capital stock of WEI, or contracts or arrangements of any kind
relating to the issuance,  sale or transfer of any capital stock or other equity
securities  of WEI. All of the  outstanding  shares of capital stock of WEI have
been offered,  issued,  sold and delivered in compliance with applicable federal
and  state  securities  laws and none of such  securities  were,  at the time of
issuance, subject to preemptive rights.

     3.3  WEI  does  not own  nor  has it  owned  in the  last  five  years  any
outstanding   shares  of  capital  stock  or  other  equity   interests  of  any
partnership,  joint venture,  trust,  corporation,  limited liability company or
other  entity  and  there are no  obligations  of WEI to  repurchase,  redeem or
otherwise acquire any capital stock or equity interest of another entity.

     3.4 This Agreement has been duly authorized, validly executed and delivered
on  behalf  of the  Sellers  and WEI and is a valid and  binding  agreement  and
obligation of the Sellers and WEI enforceable against each Sellers,  jointly and
severally,  and against WEI in accordance with its terms, subject to limitations
on enforcement  by general  principles of equity and by bankruptcy or other laws
affecting the enforcement of creditors'  rights  generally,  and the Sellers and
WEI each have  complete  and  unrestricted  power to enter  into  and,  upon the
appropriate  approvals  as  required  by law,  to  consummate  the  transactions
contemplated by this Agreement.

     3.5 Neither the making of nor the compliance  with the terms and provisions
of this Agreement and  consummation of the transactions  contemplated  herein by
WEI will  conflict  with or result in a breach or  violation  of the Articles of
Incorporation  or Bylaws of WEI, or of any material  provisions  of any material
agreement  or  instrument  to which  WEI is a party or by which it or any of its
material  properties  or assets are bound,  or of any material  provision of any
law, statute, rule, regulation,  or any existing applicable decree,  judgment or
order by any court, federal or state regulatory body,  administrative agency, or
other  governmental  body having  jurisdiction  over WEI, or any of its material
properties  or assets,  or will  result in the  creation  or  imposition  of any
material lien, charge or encumbrance upon any material property or assets of WEI



pursuant to the terms of any  agreement or instrument to which WEI is a party or
by which  WEI may be bound or to which any of WEI  property  is  subject  and no
event has  occurred  with which  lapse of time or action by a third  party could
result in a material breach or violation of or default by WEI.

     3.6 Except as  disclosed  herein,  and based upon the  representations  and
warranties of the Buyer set forth herein, no authorization,  consent,  approval,
exemption or other action by or notice to any  government  entity or filing with
or consent of any  governmental  body is required  for the sale of the  Purchase
Shares to Buyer pursuant to this Agreement.

     3.7   There  is  no  claim,   legal   action,   arbitration,   governmental
investigation or other legal or administrative proceeding, nor any order, decree
or judgment in progress,  pending or in effect,  or to the best knowledge of the
Sellers  threatened  against or relating to WEI or affecting  any of its assets,
properties,  business or capital stock. There is no continuing order, injunction
or decree of any court,  arbitrator or governmental  authority to which WEI is a
party or by which WEI or its assets,  properties,  business or capital stock are
bound.

     3.8 WEI has accurately prepared and filed all Federal,  state and other tax
returns  required by law,  domestic and foreign,  to be filed by it, has paid or
made  provisions for the payment of all taxes shown to be due and all additional
assessments,  and  adequate  provisions  have  been  and  are  reflected  in the
financial statements of WEI for all current taxes and other charges to which WEI
is subject  and which are not  currently  due and  payable.  None of the Federal
income tax returns of WEI have been audited by the Internal  Revenue  Service or
other foreign  governmental  tax agency.  WEI has no knowledge of any additional
assessments,  adjustments or contingent tax liability (whether federal or state)
pending or threatened  against WEI for any period, nor of any basis for any such
assessment, adjustment or contingency.

     3.9 Sellers are the legal, beneficial and registered owners of the Purchase
Shares,  free and clear of any  liens,  charges,  encumbrances,  voting  trusts,
shareholder agreements or rights of any kind granted to any person or entity, or
any  interest  in or the  right to  purchase  or  otherwise  acquire  any of the
Purchase  Shares from the Sellers at any time upon the  happening  of any stated
event and may transfer such shares without the consent of any third party.  Upon
closing of the  transactions  contemplated  hereby,  the Buyer will  acquire all
right,  title and interest in the Purchase Shares,  free and clear of all liens,
charges or encumbrances and will have all of Sellers's  entire right,  title and
interest in and to the Purchase Shares.  All Purchase Shares owned by Sellers is
set forth hereto on Schedule 3.9.

         3.10 Other Shareholders who join this Agreement by Addendum shall
warrant and represent that the shares sold by such shareholders are free and
clear of any liens and encumbrances and may be transferred without consent of
any third party.

         3.11 WEI has delivered to Buyer audited financial statements dated
February 28, 2001 and unaudited financial statements for the period ended August
31, 2001. All such statements, herein sometimes called "WEI Financial



Statements" are complete and correct in all material respects and, together with
the notes to these financial statements, present fairly the financial position
and results of operations of WEI for the periods indicated. All financial
statements of WEI have been prepared in accordance with generally accepted
accounting principles.

         3.12 As of the date hereof, WEI and the Sellers hereby, jointly and
severally, represent and warrant that all outstanding indebtedness of WEI is as
shown on the financial statement, and all such indebtedness, if any, will be
paid by Sellers at closing hereunder.

         3.13 Since the dates of the WEI Financial Statements, there have not
been any material adverse changes in the business or condition, financial or
otherwise, of WEI. WEI does not have any liabilities, commitments or
obligations, secured or unsecured except as shown on updated financials (whether
accrued, absolute, contingent or otherwise).

     3.14 WEI is not a party to any contract performable in the future.

     3.15 The  representations  and  warranties  of the Sellers and WEI shall be
true and correct as of the date hereof.

     3.16 WEI will deliver to Buyer,  all of its corporate  books and records at
closing.

     3.17 WEI has no employee benefit plan in effect at this time.

     3.18 No representation or warranty by WEI or the Sellers in this Agreement,
or any certificate  delivered pursuant hereto contains any untrue statement of a
material  fact or  omits to state  any  material  fact  necessary  to make  such
representation or warranty not misleading.

     3.19 Sellers or WEI have  delivered,  to Buyer true and correct copies of a
Form 10SB filed with by the Securities and Exchange  Commission  ("SEC") for the
year ended  February 28, 2001 and each of its other  reports  filed with the SEC
for the period  ended August 31, 2001.  WEI is a  registered  company  under the
Securities Exchange Act of 1934, as amended.

     3.20 WEI has duly filed all  reports  required  to be filed by it under the
Securities  Exchange Act of 1934, as amended (the "Federal Securities Laws"). No
such reports, or any reports sent to the shareholders of WEI generally contained
any untrue  statement  of material  fact or omitted to state any  material  fact
required  to be stated  therein  or  necessary  to make the  statements  in such
report,  in  light  of  the  circumstances  under  which  they  were  made,  not
misleading.

     3.21 The  Sellers has not  received  any  general  solicitation  or general
advertising  regarding  the  shares  of  Buyer's  common  stock  comprising  the
Consideration.

     3.22 WEI has  incurred  no  liabilities  except  as shown on the  financial
statements and has no contract or open account affiliations whatsoever.



                                   ARTICLE IV

                        Termination of Representation and
                        Warranties and Certain Agreements

     4.1 The  respective  representations  and  warranties of the parties hereto
shall  survive this  Agreement  for two years and the  covenants  shall  survive
hereafter.

     4.2 Any legal action or  proceeding  with respect to this  Agreement or any
matters arising out of or in connection with this Agreement or the  transactions
contemplated  hereby or the  documents  executed  and  delivered  in  connection
herewith,  and any action for enforcement of any judgment in respect thereof may
be  brought in the courts of the State of  Colorado  or of the United  States of
America for the  District of Colorado,  and, by  execution  and delivery of this
Agreement,  the  parties  each  hereby  accepts for itself and in respect of its
property,  generally  and  unconditionally,  the  jurisdiction  of the aforesaid
courts and appellate courts thereof.  The parties irrevocably consent to service
of  process  out of any of the  aforementioned  courts  in any  such  action  or
proceeding.  The parties each hereby irrevocably waive any objection that it may
now or hereafter have to the laying of venue of any of the aforesaid  actions or
proceedings  arising  out  of  or in  connection  with  this  Agreement  or  the
transactions  contemplated  hereby or the  documents  execute and  delivered  in
connection  herewith  brought in the courts referred to above and hereby further
irrevocably  waive and agree, to the extent  permitted by applicable law, not to
plead or claim in any such court that any such action or  proceeding  brought in
any such court has been brought in an inconvenient  forum.  Nothing herein shall
affect  the  right of any  party  hereto to serve  process  in any other  manner
permitted by law.


                                   ARTICLE V

                              Procedure for Closing

         5.1 At the Closing Date, the purchase and sale shall be effective with
common stock certificates of WEI being delivered duly executed for 3,882,700
shares of common stock to Buyer and the delivery of the Consideration to Sellers
from Buyer (from the Escrow with M.A. Littman), together with deliver of all
other agreements, schedules, warranties, and representations set forth in this
Agreement.

                                   ARTICLE VI

                           Conditions Precedent to the
                          Consummation of the Purchase

         The following are conditions precedent to the consummation of the
Agreement on or before the Closing Date:

         6.1 SELLERS shall have performed and complied with all of their
respective obligations hereunder which are to be complied with or performed on
or before the Closing Date and SELLERS and WEI and BUYER shall provide one



another at the Closing with a certificate to the effect that such party has
performed each of the acts and undertakings required to be performed by it on or
before the Closing Date pursuant to the terms of this Agreement.

         6.2 No action, suit or proceeding shall have been instituted or shall
have been threatened before any court or other governmental body or by any
public authority to restrain, enjoin or prohibit the transactions contemplated
herein, or which might subject any of the parties hereto or their directors or
officers to any material liability, fine, forfeiture or penalty on the grounds
that the transactions contemplated hereby, the parties hereto or their directors
or officers, have violated any applicable law or regulation or have otherwise
acted improperly in connection with the transactions contemplated hereby, and
the parties hereto have been advised by counsel that, in the opinion of such
counsel, such action, suit or proceeding raises substantial questions of law or
fact which could reasonably be decided adversely to any party hereto or its
directors or officers.

         6.3 The representations and warranties made by BUYER and SELLERS in
this Agreement shall be true as though such representations and warranties had
been made or given on and as of the Closing Date, except to the extent that such
representations and warranties may be untrue on and as of the Closing Date
because of (1) changes caused by transactions suggested or approved in writing
by BUYER or (2) events or changes (which shall not, in the aggregate, have
materially and adversely affected the business, assets, or financial condition
of WEI during or arising after the date of this Agreement.)

         6.4 All outstanding liabilities of WEI shall have been paid and
released prior to closing.

         6.5 Buyer and WEI agree that neither shall cause or adopt a reverse
split in excess of one for four shares at any time in the next two years. In the
event of a breach of this covenant, it shall trigger an immediate grant to
Sellers of a total of 325,000 shares on a post-reverse split basis, which must
be delivered to Seller within ten days after the effective date of the reverse
split.


                                   ARTICLE VII

                                  Miscellaneous

         7.1 This Agreement embodies the entire agreement between the parties,
and there have been and are no agreements, representations or warranties among
the parties other than those set forth herein or those provided for herein.

         7.2 To facilitate the execution of this Agreement, any number of
counterparts hereof may be executed, and each such counterpart shall be deemed
to be an original instrument, but all such counterparts together shall
constitute but one instrument.

         7.3 All parties to this Agreement agree that if it becomes necessary or
desirable to execute further instruments or to make such other assurances as are



deemed necessary, the party requested to do so will use its best efforts to
provide such executed instruments or do all things necessary or proper to carry
out the purpose of this Agreement.

     7.4 This  Agreement  may not be amended  except by written  consent of both
parties.

         7.5 Any notices, requests, or other communications required or
permitted hereunder shall be delivered personally or sent by overnight courier
service, prepaid, addressed as follows:

To Sellers:  a) Carl and Edna Urich, 7293 S. Sherman St., Littleton,80122
             b) Mark Urich, 8385 S. Cobblestone St., Highlands Ranch, CO 80126



To Buyer:  Xin Net Corporation, #830, 789 Pender Street, Vancouver, B.C. Canada
           V6C 1H2


or such other addresses as shall be furnished in writing by any party, and any
such notice or communication shall be deemed to have been given as of the date
received.

         7.6 No press release or public statement will be issued relating to the
transactions contemplated by this Agreement without prior approval of Buyer and
Sellers. However, WEI may issue at any time any press release or other public
statement it believes on the advice of its counsel it is obligated to issue to
avoid liability under the law relating to disclosures, but the party issuing
such press release or public statement shall make a reasonable effort to give
the other party prior notice of and opportunity to participate in such release
or statement.

         7.7 This Agreement may be executed in two or more counterparts, each of
which shall be deemed an original but all of which shall be considered one and
the same agreement. This Agreement may be executed by facsimile signatures.

         7.8 This Agreement shall be governed by and construed in accordance
with and enforced under the laws of the state of Colorado applicable to
agreements made and to be performed entirely in that state.

         7.9 In the event of a breach or default of this Agreement or any of the
continuing covenants hereunder which results in a party commencing legal action,
the prevailing party in such legal action shall be entitled to an award of all
legal fees and costs of the action.








         IN WITNESS WHEREOF, the parties have executed this Agreement this _____
day of __________________________, 2001.

                                    SELLERS:


                                   /s/ Carl Urich
                                   --------------------------------
                                   Carl Urich


                                   /s/ Edna Urich
                                   --------------------------------
                                   Edna Urich


                                   /s/ Mark Urich
                                   --------------------------------
                                   Mark Urich





                                   World Envirotech, Inc.



                                   By:  /s/ Carl Urich
                                        --------------------------------------



                                     BUYER:

                                     Xin Net Corp.



                                     /s/ Marc Hung
                                     ------------------------------------------