Within six months after the issuance of the certificate of incorporation of a China Trade Act corporation there shall be held a stockholders’ meeting either at the principal office or a branch office of the corporation. Such meeting shall be called by a majority of the directors named in the articles of incorporation and each stockholder shall be given at least ninety days’ notice of the meeting either in person or by mail. The holders of two-thirds of the voting shares, represented in person or by proxy, shall constitute a quorum at such meetings authorized to transact business. At this meeting or an adjourned meeting thereof a code of bylaws for the corporation shall be adopted by a majority of the voting shares represented at the meeting.