2007.8　Launch HEV vaccine phase III clinical trial in Jiangsu province

2007.7　Registration of bivalent HPV vaccine (HPV 16/18) for phase I/II clinical trial

2007.6　License of HEV vaccine for phase III clinical trial

2005.12　YST-Xiamen University Joint Bio-pharmacy R&D Center was invested by the government and setup the National Institute of Diagnostics and Vaccine Development in infectious diseases(NIDVD)

2005.3　Xiamen YST Bio-tech Co.,Ltd founded.

2005.1　Launch HEV vaccine phase I/II clinical trial in Guangxi province

2004.11　License of HEV vaccine for phase I/II clinical trial

2004.6　License of HEV IgM diagnostic kit

2001.9　Wantai acquired by YST.

2000.9　The application of patent “New HEV peptide and method” was accepted.

2000　An investment of US$1.8m from YST to set up the Joint Bio-pharmacy R&D Center with Xiamen University.

1993.3　Mr. Zhong Shan-shan created YST Co.,Ltd. (YST) in Hangzhou, Zhejiang Province.

1991　Establishment of Beijing Biological Pharmacy Enterprise Co.,Ltd (Wantai).