Mr. Weidong Yin has been the President, CEO, Secretary and a Director of the Company since September 24, 2003. Mr. Yin is also the General Manager of the Company’s subsidiary, Sinovac Biotech Co., Ltd. Mr. Weidong Yin, has been dedicated to hepatitis research for over 20 years. He is credited with developing the intellectual property that led to the development of the Company’s hepatitis A vaccine. In addition, Mr. Yin has been appointed to be the principal investigator by the Chinese Ministry of Science and Technology for many key governmental R&D programs such as “Inactivated Hepatitis A vaccine R&D”, “Inactivated SARS vaccine R&D” and “New Human Influenza Vaccine (H5N1) R&D”. He obtained his Masters degree in Business Administration from the Singapore State University.

Mr. Xianping Wang (Age 47) is a director nominee and has been the President and CEO of Xinhua China Ltd. since September 2004, which is a reporting issuer and is listed on the National Association of Securities Dealers Over-the-Counter Bulletin Board having the symbol “XHUA”. He is also President of Asia-Durable (Beijing) Investments Co., Ltd. since 2002, the President of Beijing New Fortune Investment Co., Ltd. from 1997-2002, and General Manager of Beijing Fuhua Constructions and Development Co., Ltd. from 1992-1997. Mr. Wang has obtained two university degrees, one was an Engineer Bachelor Degree from Navy Engineering Institute, and the other one was an Economy Master Degree from Tsinghua University. After graduation from university, Mr. Wang dedicated diversity industries, such as bio-medicine, healthy industry, construction projects, investment consultation and real estate development as well as other related industries. Since 1993, he has participated in varied real estate investment projects in China, managing the development of Fuhua Mansion, Meihui Mansion and Jinhua Garden, including others, with a total marketable area of 600,000 square meters.

Ms. Cathy Mok Chup Hung (“Mok”) (age 48) is a director nominee and is currently the Financial Controller of Zero Spot Laundry Service Private Limited where she is responsible for the financial affairs of that company and also leads the human resource management function. Prior to joining Zero Spot Laundry Service Private Limited, Mok had more than 28 years of banking experience. Mok joined Bank of China, Singapore Branch in January 2002. During that period, she lead the Internal Audit and Treasury Settlements functions. Mok was also a member of the bank’s Assets and Liabilities Management Committee, Prevention of Money Laundering Committee and Business Continuity Management Committee. Prior to joining Bank of China, Mok began her career with The Kwangtung Provincial Bank Singapore Branch. During that period, she worked in the retail banking division. Mok was also responsible for setting up the Kwangtung Provincial Bank’s Treasury Department. From 1992 to 2001, being the senior management member of the bank, she had oversight responsibilities in accounting, treasury settlements, human resource management and credit management functions. In addition, Mok was a member of Kwangtung Provincial Bank’s Credit Committee and Prevention of Money Laundering Committee. Mok holds a Master of Business Administration from the National University of Singapore.

Mr. Simon Anderson has been a Director of the Company since July 23, 2004. Mr. Anderson has been a partner and Vice President of MCSI Consulting Services Inc. from 1996 to present. Mr. Anderson is a Chartered Accountant and a Chartered Business Valuator and from 1994 to 1996 was a partner with BDO Dunwoody, an international accounting and consulting firm, where he specialized in mergers, acquisitions and valuations. Mr. Anderson was admitted as a member of the Institute of Chartered Accountants in British Columbia in 1986. He has also been a member of the Canadian Institute of Charter Business Valuators since 1990. In addition, Mr. Anderson is a director and/or Chief Financial Officer of four other public companies.

Mr. Lo Yuk Lam (age 58) is a director nominee and is presently the Vice President of PerkinElmer Life and Analytical Sciences, Pacific Rim, the Chairman of the Chinese Manufacturers’ Association of Hong Kong – Industry Technology Committee, and the Director of the Chinese Manufacturers’ Association of Hong Kong. Professor Lo was the Chairman of the Innovation and Technology Fund (Biotechnology Projects) Vetting Committee, HKSAR, and of the Biotechnology Committee, Industry & Technology Development Council, HKSAR. He was also the Director of the Hong Kong Applied R&D Fund Co., Ltd., HKSAR. Prof. Lo was heavily involved in several committees of the Industry Department of the HKSAR Government. Prof. Lo has been awarded the Honorary Fellow by the Hong Kong University of Science and Technology and the Honorary Chairman of the City University Committee of Co-operative Education Centre. Prof. Lo has extensively served the societies of Greater China. He is currently a Member of the Advisory Committee of the World Trade Centre Association (Hong Kong), an Adjunct Professor of the Chinese University of Hong Kong, the Special Advisor of the Hong Kong University of Science & Technology (HKUST), a Committee Member of the Biotechnology Research Institute (BRI) of HKUST, and a Member of the Advisory Committee of the City University of Hong Kong and the Hong Kong Polytechnic University. In Mainland China, Prof. Lo is the Consultant of the Economic Bureau, Changchun, a Member of the Advisory Committee of the Shenzhen Municipal Science and Technology Bureau, the Honorary Consultant of the Beijing Medical University, the Honorary Professor of Chengdu University of TCM and the Visiting Professor of the Xiamen University China and the Shanghai Jiao Tong University.