(Incorporated in Hong Kong with limited liability) （於香港註冊成立的有限公司） (Stock Code: 3320) （股份代號：3320） The purpose of this letter is to ascertain shareholders' choice of means of receipt of Corporate Communications. Please kindly complete Part B of the attached Instruction Slip and return the completed Instruction Slip to the Company's Share Registrar, Tricor Investor Services Limited, by facsimile at (852) 2861 1465, by email at crpharm-3320@vistra.com or by post using the mailing label provided. If you elect th ...