Henan Dashan Nonferrous Metals Co., Ltd.  is engaged in the processing, production and sales of wear-resistant copper sleeves, copper bearing shells, copper lining shells, flanged copper sleeves, graphite copper sleeves, and tin bronze copper sleeves; The factory has mastered various processes such as centrifugal casting, metal mold casting, and sand mold casting; Henan Dashan Nonferrous Metal Business Mission: Make the copper sleeve more wear-resistant.