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The main products include grinding media, steel ball,casting ball,forged grinding balls,rolling ball,griniding ball and so on. etc. Wear loss is about 2050g/t,that High chrome grinding cylpebs of quot;Dongyuanquot; is widely used in Cement plant. LEARN MORE; About Us. Hebei Dongyuan Steel Ball Co., Ltd. is one of the largest grinding materials manufacturers in China, an annual output of 150000