Shandong Donge Steel Ball group CO.,LTD is one of the largest production company of professional steel ball in China since 1988 , Output, quality and efficiency of the country rank the forefront of the industry. Experience, offering over 18 Billion steel balls per year.
We are the manufacturer of steel ball , including high-precision , low noise, high-life bearings for steel ball of the 0.8mm -25.4mm,the accuracy for the G10,G5 and G3 ,vibration Z3,Z4,with high-precision GCr15 bearing steel materials mini size and medium small size ball.