Beijing Aoptek Scientific Co.,Ltd. 

 Add.:19# Bldg,No. 26 Waihuanxi Rd, Fengtai Science Park,  Beijing,100070, China.  

Tel：+86-10-51122589  

Fax.: +86-10-51122577  

Mobile:+86-15811186705(Wechat)  

Email:  sales@aoptek.com
             emily@aoptek.com

www.aoptek.com