Beijing Telephone: +86-10-88118778/4408/1078 Fax: +86-10-88118778-813 Email: gassbj@163.com Address: No.58, Fucheng Road, Haidian District, Beijing 100142, China Shanghai Telephone:021-34010750 Address: No.76, Yueyang Road, Shanghai 200031, China
Beijing
Telephone: +86-10-88118778/4408/1078
Fax: +86-10-88118778-813
Email: gassbj@163.com
Address: No.58, Fucheng Road, Haidian District, Beijing 100142, China
Shanghai
Telephone:021-34010750
Address: No.76, Yueyang Road, Shanghai 200031, China