Established in 1989 (formerly Wujin Su_nan Steel Ball Factory), Changzhou Su_nan Wei Jie Steel Ball Co., Ltd. is a professional manufacturer of steel balls for bearings, bicycles, and industries such as chemicals and electronics. The factory spans an area of 18,000 square meters, with three production zones for bearing steel balls, carbon steel balls, and stainless steel balls. It currently owns over 200 sets of various equipment for steel ball production, with an annual output of 3 billion bearing steel balls, 10 billion carbon steel balls, and 8 billion stainless steel balls.