Zheng Zhiguo: Male, China nationality, without permanent residency abroad, born in 197 1, college degree, senior engineer. He used to be the director, assistant general manager and supervisor of the research center of Zhejiang Xianghai Pharmaceutical Co., Ltd. Now he is the chairman and general manager of Zhejiang Aoxiang Pharmaceutical Co., Ltd., and concurrently the executive director and general manager of Taizhou Aoxiang Technology Co., Ltd., a wholly-owned subsidiary of Beijing Aoxiang Kangtai Pharmaceutical Technology Co., Ltd., and a wholly-owned subsidiary of Zhejiang Zheng Qi Pharmaceutical Co., Ltd. Mr. Zheng Zhiguo has been engaged in the research work in the pharmaceutical industry for a long time and has rich R&D experience. Independently or presided over many scientific research projects such as the preparation and production technology research of entecavir, applied for many international and domestic patents as an inventor, published many papers in authoritative magazines at home and abroad, and won the scientific and technological progress awards of Zhejiang Province and Taizhou City, the second-class talent training project of "New Century 15 1" in Zhejiang Province, and was an outstanding scientific and technological worker in Zhejiang Province.