Zhongshan H.R.T. precision steel ball Co.,Ltd. is the unique manufactuer in china,who possesses the most advanced productian line.the company facilities ,such as Heat-Treament Furnece,High Speed Heading machine and machine for flashing ,grinding ,lapping and cleaning,are all imported from german companies.our company ,who granted ISO-9002,TS-16949 certificate has the ability to produce precision sreel ball up to G5,size ranging from 0.5mm to...
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