http://pastport.jp/user/csacement ja-JP Oreworld trade (Tangshan) co., Ltd. has been engaged in exporting business for about 20 years. We are dealing in fields of special cements, refractory materials and ore products. 2020-06-01T15:27:08+0900 http://pastport.jp/user/csacement/timeline/OREWORLD%20TRADE%28TANGSHAN%29%20CO.%2C%20LTD. csacement http://pastport.jp/user/csacement/timeline/OREWORLD%20TRADE%28TANGSHAN%29%20CO.%2C%20LTD.