Foreign Trade Department: 13908320426 Ma Qiang (Marketing Director)

Domestic Trade Department: 15008395229 Zhang Qing (Sales)

General Affairs Department: 0931-8250933

General Office: 0931-8250886

Contact email: maqiang@gs-bsx.com      

zhangqing@gs-bsx.com

Contact address: No. 908, West Section of Huaihe Avenue, Lanzhou New Area, Lanzhou City, Gansu Province (Gansu Production Base)