Shandong huamin steel ball joint
Shandong huamin steel ball joint-stock co., ltd. was founded on may 26, 1986, which has been 30 years. it belongs to private joint-stock enterprise in zhangqiu city, shandong province. the main products include grinding forged ball, grinding rod, liner, casting iron ball, grinding cylpebs, carbon steel ball and so on. at the same time, patented automatic grinding ball production line and.