ZHONG SHAN H.R.T. PRECISION STEEL BALL CO.,LTD. ZHONG SHAN 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 http://www.chnsteelball.com ID: 26513 | Rank: 6386 | Votes: 8.99 | Views: 901 | Submitted: 2009-07-30 |