The board of directors of China Yunnan Tin Minerals Group Company Limited announced that Mr. Mok Wai Lung, Kenneth has resigned as company secretary and authorised representative of the company with effect from 7 June 2012. Mr. Mok confirmed that he has no disagreement with the Board and there are no matters in relation to his resignation that need to be brought to the attention of the shareholders of the company and The Stock Exchange of Hong Kong Limited. The Board announced that Mr. Leung Ka Wai has been appointed as company secretary and authorised representative of the company with effect from 7 June 2012. Mr. Leung is a Certified Public Accountant of the Hong Kong Institute of Certified Public Accountants and holds a bachelor's degree in Economics and a postgraduate diploma in professional accountancy from the Chinese University of Hong Kong. Mr. Leung has over 8 years experience in auditing, finance and accounting and corporate secretarial functions.