1.China Mainland：
Beijing STM Measurement&Control Technology Co.,Ltd
E-Mail: bjstm@163.com  
Address：     No. 28 Yuhua Road, Beijing Airport Industrial Zone, Area B, Beijing101318,P.R.China 

Sales department：
Tel:              +86-15718833159  
                     +86-15718833160 
                     +86-15718833161  
                     +86-15718833162
                     +86-15718833163
Fax:              +86-10--80483312   

 2.Web:       www.bjstmck.com