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Exhibit 3.12

AMERICAN TECHNICAL MOLDING, INC.

RESTATED
BYLAWS

Adopted
as of
December 22, 2000

BYLAWS
OF
AMERICAN TECHNICAL MOLDING, INC.
(a California corporation)

ARTICLE I

SHAREHOLDERS

        1.    CERTIFICATES FOR SHARES.    Each certificate for shares of the corporation shall set forth thereon the name of the record holder of the shares represented thereby, the number of shares and the class or series of shares owned by said holder, the par value, if any, of the shares represented thereby, and such other statements, as applicable, prescribed by Sections 416 - 419, inclusive, and other relevant Sections of the General Corporation Law of the State of California (the "General Corporation Law") and such other statements, as applicable, which may be prescribed by the Corporate Securities Law of 1968 of the State of California and any other applicable provision of law. Each such certificate issued shall be signed in the name of the corporation by the President or a Vice President, if any, and by the chief financial officer or an Assistant Treasurer or the Secretary or any Assistant Secretary. Any or all of the signatures on a certificate for shares may be facsimile. In case any officer, transfer agent or registrar who has signed or whose facsimile signature has been placed upon a certificate for shares shall have ceased to be such officer, transfer agent or registrar before such certificate is issued, it may be issued by the corporation with the same effect as if such person were an officer, transfer agent or registrar at the date of issue.

        In the event that the corporation shall issue the whole or any part of its shares as partly paid and subject to call for the remainder of the consideration to be paid therefor, any such certificate for shares shall set forth thereon the statements prescribed by Section 409 of the General Corporation Law.

        The corporation may issue a new certificate for shares or for any other security in the place of any other certificate theretofore issued by it, which is alleged to have been lost, stolen or destroyed. As a condition to such issuance, the corporation may require any such owner of the allegedly lost, stolen or destroyed certificate or any such owner's legal representative to give the corporation a bond, or other adequate security, sufficient to indemnify it against any claim that may be made against it, including any expense or liability, on account of the alleged loss, theft or destruction of any such certificate or the issuance of such new certificate.

        2.    FRACTIONAL SHARES.    Subject to, and in compliance with, the provisions of Section 407 and any other provisions of the General Corporation Law, the corporation may, but need not, issue fractions of a share originally or upon transfer. If the corporation does not issue fractions of a share, it shall in connection with any original issuance of shares arrange for the disposition of fractional interests by those entitled thereto, or pay in cash the fair value of fractions of a share as of the time when those entitled to receive such fractions are determined, or issue scrip or warrants in registered or bearer form which shall entitle the holder to receive a certificate for a full share upon the surrender of such scrip or warrants aggregating a full share. A determination by the Board of Directors of the fair value of fractions of a share shall be conclusive in the absence of fraud. A certificate for a fractional share shall, but scrip or warrants shall not unless otherwise provided therein, entitle the holder to exercise voting rights, to receive dividends thereon and to participate in any of the assets of the corporation in the event of liquidation. The Board of Directors may cause scrip or warrants to be issued subject to the condition that they shall become void if not exchanged for a certificate or certificates representing a full share or full shares, as the case may be, before a specified date or that any of the shares for which scrip or warrants are exchangeable may be sold by the corporation, and any proceeds thereof distributed to the holder of any such scrip or warrants, or any other condition which the Board of Directors may impose.

        3.    SHARE TRANSFERS.    Upon compliance with any provisions of the General Corporation Law and/or the Corporate Securities Law of 1968 which may restrict the transferability of shares, transfers

of shares of the corporation shall be made only on the record of shareholders of the corporation by the registered holder thereof, or by his attorney thereunto authorized by power of attorney duly executed and filed with the Secretary of the corporation or with a transfer agent or a registrar, if any, and on surrender of the certificate or certificates for such shares properly endorsed and the payment of all taxes, if any, due thereon.

        4.    RECORD DATE FOR SHAREHOLDERS.    In order that the corporation may determine the shareholders entitled to notice of any meeting or to vote or be entitled to receive payment of any dividend or other distribution or allotment of any rights or entitled to exercise any rights in respect of any other lawful action, the Board of Directors may fix, in advance, a record date, which shall not be more than sixty days or fewer than ten days prior to the date of such meeting or more than sixty days prior to any other action.

        If the Board of Directors shall not have fixed a record date as aforesaid, the record date for determining shareholders entitled to notice of or to vote at a meeting of shareholders shall be at the close of business on the business day next preceding the day on which notice is given or, if notice is waived, at the close of business on the business day next preceding the day on which the meeting is held; the record date for determining shareholders entitled to give consent to corporate action in writing without a meeting, when no prior action by the Board of Directors has been taken, shall be the day on which the first written consent is given; and the record date for determining shareholders for any other purpose shall be at the close of business on the day on which the Board of Directors adopts the resolution relating thereto, or the sixtieth day prior to the date of such other action, whichever is later.

        A determination of shareholders of record entitled to notice of or to vote at a meeting of shareholders shall apply to any adjournment of the meeting unless the Board of Directors fixes a new record date for the adjourned meeting, but the Board of Directors shall fix a new record date if the meeting is adjourned for more than forty-five days from the date set for the original meeting.

        Except as may be otherwise provided by the General Corporation Law, shareholders at the close of business on the record date shall be entitled to notice and to vote or to receive any dividend, distribution or allotment of rights or to exercise the rights, as the case may be, notwithstanding any transfer of any shares on the books of the corporation after the record date.

        5.    MEANING OF CERTAIN TERMS.    As used in these Bylaws in respect of the right to notice of a meeting of shareholders or a waiver thereof or to participate or vote thereat or to assent or consent or dissent in writing in lieu of a meeting, as the case may be, the term "share" or "shares" or "shareholder" or "shareholders" refers to an outstanding share or shares and to a holder or holders of record of outstanding shares when the corporation is authorized to issue only one class of shares, and said reference is also intended to include any outstanding share or shares and any holder or holders of record of outstanding shares of any class upon which or upon whom the Articles of Incorporation confer such rights where there are two or more classes or series of shares or upon which or upon whom the General Corporation Law confers such rights notwithstanding that the Articles of Incorporation may provide for more than one class or series of shares, one or more of which are limited or denied such rights thereunder.

        6.    SHAREHOLDER MEETINGS.

        6.1    TIME.    An annual meeting for the election of directors and for the transaction of any other proper business and any special meeting shall be held on the date and at the time as the Board of Directors shall from time to time fix.

        6.2    PLACE.    Annual meetings and special meetings shall be held at such place, within or without the State of California, as the directors may, from time to time, fix. Whenever the

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directors shall fail to fix such place, the meeting shall be held at the principal executive office of the corporation.

        6.3    CALL.    Annual meetings may be called by the directors, by the Chairman of the Board, if any, the President, the Secretary, or by any officer instructed by the directors to call the meeting. Special meetings may be called in like manner and by the holders of shares entitled to cast not less than ten percent of the votes at the meeting being called.

        6.4    NOTICE.    Written notice stating the place, day, and hour of each meeting, and, in the case of a special meeting, the general nature of the business to be transacted or, in the case of an Annual Meeting, those matters which the Board of Directors, at the time of mailing of the notice, intends to present for action by the shareholders, shall be given not less than ten days (or not less than any such other minimum period of days as may be prescribed by the General Corporation Law) or more than sixty days (or more than any such maximum period of days as may be prescribed by the General Corporation Law) before the date of the meeting, either personally or by mail or other means of written communication, charges prepaid by or at the direction of the directors, the President, if any, the Secretary or the officer or persons calling the meeting, addressed to each shareholder at his address appearing on the books of the corporation or given by him to the corporation for the purpose of notice, or, if no such address appears or is given, at the place where the principal executive office of the corporation is located or by publication at least once in a newspaper of general circulation in the county in which the said principal executive office is located. Such notice shall be deemed to be delivered when deposited in the United States mail with first class postage thereon prepaid, or sent by other means of written communication addressed to the shareholder at his address as it appears on the stock transfer books of the corporation. The notice of any meeting at which directors are to be elected shall include the names of nominees intended at the time of notice to be presented by the Board of Directors for election. At an annual meeting of shareholders, any matter relating to the affairs of the corporation, whether or not stated in the notice of the meeting, may be brought up for action except matters which the General Corporation Law requires to be stated in the notice of the meeting. The notice of any annual or special meeting shall also include, or be accompanied by, any additional statements, information, or documents prescribed by the General Corporation Law. When a meeting is adjourned to another time or place, notice of the adjourned meeting need not be given if the time and place thereof are announced at the meeting at which the adjournment is taken; provided that, if the adjournment is for more than forty-five days, or if after the adjournment a new record date is fixed for the adjourned meeting, a notice of the adjourned meeting shall be given to each shareholder. At the adjourned meeting, the corporation may transact any business which might have been transacted at the original meeting.

        Upon request in writing to the Chairman of the Board, the President, the Vice President or the Secretary, by any person (other than the Board of Directors) entitled to call a special meeting of shareholders, the officer forthwith shall cause notice to be given to the shareholders entitled to vote that a meeting will be held at a time requested by the person or persons calling the meeting, not less than 35 nor more than 60 days after the receipt of the request. If the notice is not given within 20 days after receipt of the request, the persons entitled to call the meeting may give the notice, or the superior court of the proper county shall summarily order the giving of the notice, after notice to the corporation giving it an opportunity to be heard. The procedure provided in subdivision (c) of Section 305 of the General Corporation Law shall apply to such application.

        The transactions of any meeting, however called and noticed, and wherever held, shall be as valid as though had at a meeting duly held after regular call and notice, if a quorum is present and if, either before or after the meeting, each of the shareholders entitled to vote, but not present in person or by proxy, signs (or his proxy signs) a written waiver of notice or a consent to the holding of the meeting or an approval of the minutes thereof. All such waivers, consents and approvals

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shall be filed with the corporate records or made a part of the minutes of the meeting. Attendance of a person at a meeting constitutes a waiver of notice of and presence at such meeting, except when the person objects, at the beginning of the meeting, to the transaction of any business because the meeting is not lawfully called or convened and except that attendance at a meeting shall not constitute a waiver of any right to object to the consideration of matters required by the General Corporation Law to be included in the notice but not so included, if such objection is expressly made at the meeting. Except as otherwise provided in subdivision (f) of Section 601 of the General Corporation Law, neither the business to be transacted at nor the purpose of any regular or special meeting need be specified in any written waiver of notice, consent to the holding of the meeting or approval of the minutes thereof.

        6.5    CONDUCT OF MEETING.    Meetings of the shareholders shall be presided over by one of the following officers in the order of seniority and if present and acting: the Chairman of the Board, if any, the President, a Vice President, or, if none of the foregoing is in office and present and acting, by a chairman to be chosen by the shareholders. The Secretary of the corporation, or in his absence, an Assistant Secretary, shall act as secretary of every meeting, but, if neither the Secretary nor an Assistant Secretary is present, the chairman of the meeting shall appoint a secretary of the meeting.

        6.6    PROXY REPRESENTATION.    Every shareholder may authorize another person or persons to act as his proxy at a meeting or by written action. No proxy shall be valid after the expiration of eleven months from the date of its execution unless otherwise provided in the proxy. Every proxy shall be revocable at the pleasure of the person executing it prior to the vote or written action pursuant thereto, except as otherwise provided by the General Corporation Law. As used herein, a "proxy" shall be deemed to mean a written authorization signed or an electronic transmission authorized by a shareholder or a shareholder's attorney in fact giving another person or persons power to vote with respect to the shares of such shareholder, and "signed" as used herein shall be deemed to mean the placing of such shareholder's name or other authorization on the proxy, whether by manual signature, typewriting, telegraphic or electronic transmission or otherwise by the shareholder or the shareholder's attorney in fact. Where applicable, the form of any proxy shall comply with the provisions of Section 604 of the General Corporation Law.

        6.7    INSPECTORS—APPOINTMENT.    In advance of any meeting, the Board of Directors may appoint inspectors of election to act at the meeting and any adjournment thereof. If inspectors of election are not so appointed, or, if any persons so appointed fail to appear or refuse to act, the chairman of any meeting of shareholders may, and on the request of any shareholder or a shareholder's proxy shall, appoint inspectors of election, or persons to replace any of those who so fail or refuse, at the meeting. The number of inspectors shall be either one or three. If appointed at a meeting on the request of one or more shareholders or proxies, the majority of shares represented shall determine whether one or three inspectors are to be appointed.

        The inspectors of election shall determine the number of shares outstanding and the voting power of each, the shares represented at the meeting, the existence of a quorum, the authenticity, validity, and effect of proxies, receive votes, ballots, if any, or consents, hear and determine all challenges and questions in any way arising in connection with the right to vote, count and tabulate all votes or consents, determine when the polls shall close, determine the result, and do such acts as may be proper to conduct the election or vote with fairness to all shareholders. If there are three inspectors of election, the decision, act, or certificate of a majority shall be effective in all respects as the decision, act, or certificate of all.

        6.8    QUORUM; VOTE; WRITTEN CONSENT.    The holders of a majority of the voting shares shall constitute a quorum at a meeting of shareholders for the transaction of any business. The shareholders present at a duly called or held meeting at which a quorum is present may

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continue to do business until adjournment notwithstanding the withdrawal of enough shareholders to leave less than a quorum if any action taken, other than adjournment, is approved by at least a majority of the shares required to constitute a quorum. In the absence of a quorum, any meeting of shareholders may be adjourned from time to time by the vote of a majority of the shares represented thereat, but no other business may be transacted except as hereinbefore provided.

        In the election of directors, a plurality of the votes cast shall elect. No shareholder shall be entitled to exercise the right of cumulative voting at a meeting for the election of directors unless the candidate's name or the candidates' names have been placed in nomination prior to the voting and the shareholder has given notice at the meeting prior to the voting of the shareholder's intention to cumulate the shareholder's votes. If any one shareholder has given such notice, all shareholders may cumulate their votes for such candidates in nomination.

        Except as otherwise provided by the General Corporation Law, the Articles of Incorporation or these Bylaws, any action required or permitted to be taken at a meeting at which a quorum is present shall be authorized by the affirmative vote of a majority of the shares represented and voting at the meeting; provided, that said shares voting affirmatively shall also constitute at least a majority of the required quorum.

        Except in the election of directors by written consent in lieu of a meeting, and except as may otherwise be provided by the General Corporation Law, the Articles of Incorporation or these Bylaws, any action which may be taken at any annual or special meeting may be taken without a meeting and without prior notice, if a consent in writing, setting forth the action so taken, shall be signed by holders of shares having not less than the minimum number of votes that would be necessary to authorize or take such action at a meeting at which all shares entitled to vote thereon were present and voted. Directors may not be elected by written consent except by unanimous written consent of all shares entitled to vote for the election of directors. Notice of any shareholder approval pursuant to Section 310, 317, 1201 or 2007 without a meeting by less than unanimous written consent shall be given at least ten days before the consummation of the action authorized by such approval, and prompt notice shall be given of the taking of any other corporate action approved by shareholders without a meeting by less than unanimous written consent to those shareholders entitled to vote who have not consented in writing.

        Elections of directors at a meeting need not be by ballot unless a shareholder demands election by ballot at the election and before the voting begins. In all other matters, voting need not be by ballot.

        7.    ANNUAL REPORT.    Whenever the corporation shall have fewer than one hundred shareholders as said number is determined as provided in Section 605 of the General Corporation Law, the Board of Directors shall not be required to cause to be sent to the shareholders of the corporation the annual report prescribed by Section 1501 of the General Corporation Law unless it shall determine that a useful purpose would be served by causing the same to be sent or unless the Department of Corporations, pursuant to the provisions of the Corporate Securities Law of 1968, shall direct the sending of the same.

ARTICLE II

BOARD OF DIRECTORS

        1.    FUNCTIONS.    Except as any provision of law may otherwise require, the business and affairs of the corporation shall be managed and all corporate powers shall be exercised by or under the direction of its Board of Directors. The Board of Directors may delegate the management of the day-to-day operation of the business of the corporation to a management company or other person, provided that the business and affairs of the corporation shall be managed and all corporate powers

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shall be exercised under the ultimate direction of the Board of Directors. The Board of Directors shall have authority to fix the compensation of directors for services in any lawful capacity.

        2.    QUALIFICATIONS AND NUMBER.    A director need not be a shareholder of the corporation, a citizen of the United States, or a resident of the State of California. The authorized number of directors constituting the Board of Directors until further changed shall be 3. The authorized number of directors constituting the Board of Directors shall be not less than 3, nor more than 9. Subject to the foregoing provisions and the provisions of Section 212 of the General Corporation Law, the number of directors may be changed from time to time by an amendment of these Bylaws. No decrease in the authorized number of directors shall have the effect of shortening the term of any incumbent director.

        3.    ELECTION AND TERM.    Directors who are elected to replace any or all of the members of the initial Board of Directors or who are elected at an annual meeting of shareholders, and directors who are elected in the interim to fill vacancies, shall hold office until the next annual meeting of shareholders and until their successors have been elected and qualified, or until their earlier resignation, removal from office, or death. In the interim between annual meetings of shareholders or of special meetings of shareholders called for the election of directors, any vacancies in the Board of Directors, including vacancies resulting from an increase in the authorized number of directors which have not been filled by the shareholders, and including any other vacancies which the General Corporation Law authorizes directors to fill, except for a vacancy created by the removal of a director, may be filled by directors or by the sole remaining director, as the case may be, in the manner prescribed by Section 305 of the General Corporation Law. Vacancies occurring by reason of the removal of directors which are not filled at the meeting of shareholders at which any such removal has been effected may be filled by the directors if the Articles of Incorporation or a Bylaw adopted by the shareholders so provides. Any director may resign effective upon giving written notice to the Chairman of the Board, if any, the President, if any, the Secretary or the Board of Directors, unless the notice specifies a later time for the effectiveness of such resignation. If the resignation is effective at a future time, a successor may be elected to the office when the resignation becomes effective.

        The shareholders may elect a director at any time to fill any vacancy which the directors are entitled to fill, but which they have not filled. Any such election by written consent other than to fill a vacancy created by removal shall require the consent of a majority of the shares.

        The name and the address of each initial director elected by the incorporator or incorporators are set forth in the minutes of the organization of the incorporator or incorporators at which each said initial director was elected, and said name and the address are hereby made a part of these Bylaws as if fully set forth therein.

        4.    MEETINGS.

        4.1    TIME.    Meetings shall be held at such time as the Board shall fix, except that the first meeting of a newly elected Board shall be held as soon after its election as the directors may conveniently assemble.

        4.2    PLACE.    Meetings may be held at any place, within or without the State of California, which has been designated in any notice of the meeting, or, if not stated in said notice or, if there is no notice given, at the place designated by resolution of the Board of Directors.

        4.3    CALL.    Meetings may be called by the Chairman of the Board, if any, by the President, by any Vice President, or by any two directors.

        4.4    NOTICE AND WAIVER THEREOF.    No notice shall be required for regular meetings for which the time and place have been fixed by the Board of Directors. Special meetings shall be held upon at least four days' notice by mail or upon at least forty-eight hours' notice delivered

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personally or by telephone or by any other means authorized by the provisions of Section 307 of the General Corporation Law. Notice of a meeting need not be given to any director who signs a waiver of notice or a consent to holding the meeting or an approval of the minutes thereof, whether before or after the meeting, or who attends the meeting without protesting, prior thereto or at its commencement, the lack of notice to such director. A notice or waiver of notice need not specify the purpose of any regular or special meeting of the Board of Directors. All such waivers, consents and approvals shall be filed with the corporate records or made a part of the minutes of the meeting.

        4.5    QUORUM AND ACTION.    A majority of the authorized number of directors shall constitute a quorum except when a vacancy or vacancies prevents such majority, whereupon a majority of the directors in office shall constitute a quorum, provided such majority shall constitute at least either one-third of the authorized number of directors or at least two directors, whichever is larger, or unless the authorized number of directors is only one. A majority of the directors present, whether or not a quorum is present, may adjourn any meeting to another time and place. If the meeting is adjourned for more than twenty-four hours, notice of any adjournment to another time or place shall be given prior to the time of the adjourned meeting to the directors, if any, who were not present at the time of the adjournment. Except as the Articles of Incorporation, these Bylaws and the General Corporation Law may otherwise provide, the act or decision done or made by a majority of the directors present at a meeting duly held at which a quorum is present shall be the act of the Board of Directors. Members of the Board of Directors may participate in a meeting through use of conference telephone or other communications equipment, and participation by such use constitutes presence in person at any such meeting, provided the conditions prescribed by the provisions of Section 307 of the General Corporation Law are met.

        A meeting at which a quorum is initially present may continue to transact business notwithstanding the withdrawal of directors, provided that any action which may be taken is approved by at least a majority of the required quorum for such meeting.

        4.6    PARTICIPATION IN MEETING THROUGH USE OF COMMUNICATIONS EQUIPMENT.    Members of the Board of Directors may participate in a meeting through use of conference telephone, electronic video screen communication, or other communications equipment. Participation in a meeting through use of conference telephone constitutes presence in person at the meeting as long as all members participating in the meeting are able to hear one another. Participation in a meeting through the use of electronic video screen communication or other communications equipment (other than conference telephone) constitutes presence in person at that meeting if all of the following apply:

        A.    Each member participating in the meeting can communicate with all of the other members concurrently.

        B.    Each member is provided the means of participating in all matters before the Board of Directors, including, without limitation, the capacity to propose, or to interpose an objection to, a specific action to be taken by the corporation.

        C.    The corporation adopts and implements some means of verifying both of the following: (i) A person participating in the meeting is a director or other person entitled to participate in the meeting; and (ii) All actions of, or votes by, the Board of Directors are taken or cast only by the directors and not by persons who are not directors.

        4.7    CHAIRMAN OF THE MEETING.    The Chairman of the Board, if any and if present and acting, shall preside at all meetings. Otherwise, the President, if any and present and acting, or any director chosen by the Board, shall preside.

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        5.    REMOVAL OF DIRECTORS.    The entire Board of Directors or any individual director may be removed from office without cause by approval of the holders of at least a majority of the shares provided, that unless the entire Board is removed, an individual director shall not be removed when the votes cast against such removal, or not consenting in writing to such removal, would be sufficient to elect such director if voted cumulatively at an election of directors at which the same total number of votes were cast, or, if such action is taken by written consent, in lieu of a meeting, all shares entitled to vote were voted, and the entire number of directors authorized at the time of the director's most recent election were then being elected. If any or all directors are so removed, new directors may be elected at the same meeting or by such written consent. The Board of Directors may declare vacant the office of any director who has been declared of unsound mind by an order of court or convicted of a felony.

        6.    COMMITTEES.    The Board of Directors, by resolution adopted by a majority of the authorized number of directors, may designate one or more committees, each consisting of two or more directors to serve at the pleasure of the Board of Directors. The Board of Directors may designate one or more directors as alternate members of any such committee, who may replace any absent member at any meeting of such committee. Any such committee, to the extent provided in the resolution of the Board of Directors, shall have all the authority of the Board of Directors except such authority as may not be delegated by the provisions of the General Corporation Law.

        7.    WRITTEN ACTION.    Any action required or permitted to be taken may be taken without a meeting if all of the members of the Board of Directors shall individually or collectively consent in writing to that action. The written consent or consents shall be filed with the minutes of the proceedings of the Board. The action by written consent shall have the same force and effect as a unanimous vote of the directors.

ARTICLE III

OFFICERS

        The corporation shall have a President and Secretary and such other officers with such titles and duties as may be necessary to enable it to sign instruments and share certificates. Subject to the foregoing, any number of offices may be held by the same person. The titles, powers, and duties of officers shall be set forth in the resolution or instrument choosing them. The Chairman of the Board, if any, and/or the President, if any, the Secretary, the chief financial officer, and any Vice President or other executive officer shall be chosen by the Board of Directors. Any Assistant Secretary, Assistant Treasurer or other junior officer shall be chosen by the Board of Directors or in the manner prescribed by the Board of Directors.

        The President shall be the general manager and chief executive officer of the corporation unless the resolution choosing him shall provide otherwise. The Treasurer shall be the chief financial officer unless the resolution choosing him shall provide otherwise.

        Unless otherwise provided in the resolution or instrument choosing the same, all officers shall be chosen for a term of office running until the meeting of the Board of Directors following the next annual meeting of shareholders and until their successors have been chosen and qualified.

        Any officer, or any agent chosen by the Board of Directors, may be removed by the Board whenever in its judgment the best interests of the corporation will be served thereby.

ARTICLE IV

BOOKS AND RECORDS—STATUTORY AGENT

        The corporation shall keep at its principal executive office in the State of California or, if its principal executive office is not in the State of California, at its principal business office in the State of

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California, the original or a copy of the Bylaws as amended to date, which shall be open to inspection by the shareholders at all reasonable times during office hours. If the principal executive office of the corporation is outside the State of California, and, if the corporation has no principal business office in the State of California, it shall upon request of any shareholder furnish a copy of the Bylaws as amended to date.

        The corporation shall keep adequate and correct books and records of account and shall keep minutes of the proceedings of its shareholders, Board of Directors and committees, if any, of the Board of Directors. The corporation shall keep at its principal executive office, or at the office of its transfer agent or registrar, a record of its shareholders, giving the names and addresses of all shareholders and the number and class of shares held by each. Such minutes shall be in written form. Such other books and records shall be kept either in written form or in any other form capable of being converted into written form.

        The name of the agent for service of process within the State of California is Corporation Service Company which does business in California as CSC-Lawyers Incorporating Service.

ARTICLE V

CORPORATE SEAL

        The corporate seal shall set forth the name of the corporation and the State and date of incorporation.

ARTICLE VI

FISCAL YEAR

        The fiscal year of the corporation shall be fixed, and shall be subject to change, by the Board of Directors.

ARTICLE VII

CONTROL OVER BYLAWS

        After the initial Bylaws of the corporation shall have been adopted by the Board of Directors of the corporation, the Bylaws may be amended or repealed or new Bylaws may be adopted by the shareholders entitled to exercise a majority of the voting power or by the Board of Directors; subject to Section 212, and other applicable provisions, of the General Corporation Law.

        I HEREBY CERTIFY that the foregoing is a full, true and correct copy of the Restated Bylaws of American Technical Molding, Inc., a California corporation, as in effect on the date hereof.

        WITNESS my hand and the seal of the corporation.

Dated: December 22, 2000

/s/STEVEN D. NEUMANNSteven D. Neumann, Secretary

(SEAL)

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Exhibit 3.12

AMERICAN TECHNICAL MOLDING, INC. RESTATED BYLAWS Adopted as of December 22, 2000