Zhengzhou Sino-Crystal Diamond Co., Ltd.
Tel：+86-371-63379595(Foreign Trade) 63379559(Domestic Trade)
63377777(Security) 63379577(Administration) 
Fax：+86-371-63379596(Foreign Trade) 63379559(Domestic Trade)
63377777(Security) 63379577(Administration)
E-mail：info@nongren8.com  sales@nongren8.com chinadiamond@nongren8.com
Address：Building 30#, No. 20 Bitao Road, High and New Technology Development Zone, Zhengzhou
Zip Code：450001