... with industry and trade integrationMain ProductsGrinding Steel Ball, Mild Steel Ball, Casting Steel Ball, Ball Bearing, Valve Ball etc.Producing EquipmentCNC machine SHENGYU & SYX42, ... was founded in October, 2000, specializing in the production of CNC/AUTO lathe, springs, shafts, screws, stamping parts and other ... please click our website: http://gdsx.en.alibaba.com Steel ball ,grinding media stell ...