Zhangqiu Ruinian Steel Ball co,LTD - Grinding Media,Steel ...
Zhangqiu Ruinian casting and forging co,LTD is a professional company in producting grinding media,forged grinding media,forged steel ball,grinding steel ball,grinding media ball,grinding ball in China.Grinding balls are mainly applied in mines,power station,cement plants and chemical fields.The steel balls made by us are of high hardness, even wearing,good wearing resistance,