HUNAN LONGSEN CHEMICAL CO., LTD.

Tel：+86-730-8312123    Fax：+86-730-8422580

E-mail:sales01@yyrksw.com

Address: Technology Entrepreneurship Service Incubation Center of Yunxi District Fine Chemical Industrial Park, Yueyang City, Hunan Province

HUNAN LONGSEN BIOTECHNOLOGY CO., LTD.

Tel：+86-730-8312123    Fax：+86-730-8422580

Address: No. 2 Building, Lingang Incubation Base for Scientific and Technological Entrepreneurship，Yungang Road, Yueyang Chenglingji Port, New District, Yueyang City ,Hunan Province, China.

YUEYANG RUIKANG BIOTECHNOLOGY CO., LTD.

Address: No. 2 Building, Lingang Incubation Base for Scientific and Technological Entrepreneurship，Yungang Road, Yueyang Chenglingji Port, New District, Yueyang City ,Hunan Province, China.

Tel：+86-730-8422581 +86-730-8421181

Fax：+86-730-8422580