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BEIJING 7 STAR OPTICAL INSTRUMENTS CO.,LTD.
Add:258，QunFang South Street,LiYuan Town,TongZhou District,Beijing,101121
Tel:086-10-80885970/71/72
Fax:086-10-80885973
E-mail:info@7-s.com.cn
Website:www.7-s.com.cn
