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QUEENBEE  DIAMOND  INDUSTRIAL  CO.,  LTD.
5C,3,Century Garden, No. 45 Xiaoguanbeili,
Chaoyang District, Beijing, P. R. China 
Tel:  +86-10-84896872, 84896876, 84896311
Fax: +86-10-84896873
E-mail:
sales@queenbeediamond.com.cn