Optics Focus Instruments Co,. Ltd.
Room 2062, Building NO.1, Xin Qiao Jia Yuan,
Tong Zhou District,
Beijing, 101113, China.
Tel: +86 10 61507521
Email: sales@optics-focus.com
Web: www.optics-focus.com
Our Business Hours: Mon. - Fri. 9 a.m. - 6 p.m. (China Time)