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Add： Room1106,11 F, Shidaifengshang ,No. 123 , Caoshi St. ,Chengdu,China
Tel：86-28-86939603 Fax：86-28-86939890
E-mail： chengtan@bits-china.com ; chengtan71@hotmail.com
copyright (c)2002 Sichuan Chengtan Rock Drilling Ltd.& Chengdu Prospecting Machinery Factory