Address：#1127,Chanjian  Road,Xigong District,Luoyang,China 

Email：lydm@dm-optical.com

Tel： +86 -13837966482（Linda） 

           +86 -13233922190（Wensy）

           +86 -17703881945（Sabrina）

Fax：+86 - 379 - 62112223

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