Optotek Technology Co Ltd Headquarter in Nanjing Huijinqilin 1905, Shengtai Road 6#, Jiangning Nanjing, Jiangsu China 211100 Phone: +86-25-84305866 Fax: +86-25-52100966

Optotek Technology Co Ltd Shenzhen Office Huashenghui Building 805, Jinhai Road 15#, Baoan Xixiang Street Shenzhen, Guangdong China 518000 Phone: +86-755-23116599 Fax: +86-755-23117599