Zhuji City Yinhai Mine Machinery Co., Ltd., is located at Zhuji, Zhejiang province, which is a developed and deep cultural city__the native place of Xi Shi, famous Chinese beauty in ancient China. It was established in the middle of the year of 1982, which is a manufacturer specializing in the copper axial sleeve and copper bush, copper worm wheel, high manganese alloy wear resistant steel. It is a private-owned corporate company, which is integrated with the non-ferrous castings, high manganese steel castings, metal processing and testing. It is provided with over 350 members and staffs, which total assets reaches RMB 50 million, occupies 25, 000m2, has three branches. In 2003, it produced 350 T copper axial sleeves (finished products). In 2004, it was over 600 T. Meanwhile, it has taken great cost in the modern machinery processing equipments to expand production capacity. Until the year of 2005, its annual production capacity will reach over 1000 T, 3000 T high manganese alloy steel, whichis the No. 1 in the national copper axial sleeve production capacity. In the casting technique, it is adopted with the centrifugal casting. In the high lead bronze, it is adopted with the steel die stated casting technique, which gets over the high tin in the lead bronze. They have been popularized and provided with favorable comment by the customers for many years. The perfect quality is in the permanent pursuit of Yinhai' people.