Head Office & Factory

 

Tel: 86-10-6972-3305 

Fax:86-10-6972-3226      6974-5263

E-mail:info@gangyan-diamond.com

Overseas Office and Warehouse in California

 

Tel: 1-800-333-9033

Fax: 909 392 6011

http://www.gy-diamond.com

E-mail: info@gy-diamond.com


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