Guangzhou Yilong Optics

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Copyright © 2002 Guangzhou Yilong Optics
Address: Guangcong, Shiji Town, Panyu, Guangzhou　
Tel: 13808872730,0086-20-84551752,81820840,84853408 　Fax:0086-20-84551752
E-mail:INFO@YL-OPTICS.COM