OPEAK OptoElectronics Technology Co.,Ltd.
 Address: Laser Center 427, No.6 KeYanXi Road, Nankai District, Tianjin,   P.R.Chian
 Post Code: 300192
 Telephone: +86-22-87899773 87899303
 Fax: +86-22-87899303
 Website: www.opeak.com.cn
 E-mail: sales@opeak.com.cn
         support@opeak.com.cn
         webmaster@opeak.com.cn
         info@opeak.com.cn