Yantai Zhenghai Biotechnology Co., Ltd.

Address: No. 10 Hengshan Road, Economic and Technological Development Zone, Yantai

Tel：400-688-6808

Fax: 86-535-6931900

Email:zhangjp@zhenghai.com

Suzhou Zhenghai Bio-tech Co.,Ltd.

Address: Room 205, B2, 218 Xing Hu Rd.，Suzhou Industrial Park, China

Tel: 0512-62765383

Beijing Office

Address: Room 2006，Building No.16，Chaowai Street，Chaoyang District,Beijing,China

Tel:010-85253635