ZHONGSHAN H.R.T PRECISION STEEL BALL CO.,LTD. is the unique manufacture in china, which posses- ses the most advanced production line. The company facilities, from the Heat-Treament Furnace, High Speed Heading machine and machine for flashing, grinding, lap- ping and cleaning, are all imported from German compa-nies –SMS, Hilgland and Schwarz. Our company ,which granted ISO-9002,TS-16949 certificate, has the ability to produce precision steel ball up to G5,size is ranging from