Xiao Li Zheng

Changchun Keygen Biological Products Co. Ltd. engages in the research and development of pharmaceutical products. The company main products are live attenuated measles and varicella vaccine, chickenpox vaccine and other related products. The company was founded in December 2003 and is headquartered in Changchun, China.

Changchun Keygen Biological Products Co. Ltd. engages in the research and development of pharmaceutical products. The company main products are live attenuated measles and varicella vaccine, chickenpox vaccine and other related products. The company was founded in December 2003 and is headquartered in Changchun, China.

Changchun Keygen Biological Products Co. Ltd. engages in the research and development of pharmaceutical products. The company main products are live attenuated measles and varicella vaccine, chickenpox vaccine and other related products. The company was founded in December 2003 and is headquartered in Changchun, China.

Changchun Keygen Biological Products Co. Ltd. engages in the research and development of pharmaceutical products. The company main products are live attenuated measles and varicella vaccine, chickenpox vaccine and other related products. The company was founded in December 2003 and is headquartered in Changchun, China.

Changchun Keygen Biological Products Co. Ltd. engages in the research and development of pharmaceutical products. The company main products are live attenuated measles and varicella vaccine, chickenpox vaccine and other related products. The company was founded in December 2003 and is headquartered in Changchun, China.