大连一铭精工机械有限公司专业生产耐磨铜套,高强度耐磨铜衬套,高硬度耐磨耐腐蚀铜轴套。Dalian Yiming Precision Machinery Co. Ltd. specializing in the production of wear-resistant copper sleeve, high strength wear-resistant copper bushing, high hardness, wear and corrosion resistance of copper sleeve.