China Demy (D&M) Bearing Co., Ltd. is located in Hemudu Culture Ruins of Ningbo China which has 7000-year-old history. The company is one of leading ball & roller bearing manufacturers & belt, chain, auto-parts, steel ball, steel balls exporters in China. It is specialized in research and development for various kinds of high precision, non-noise, long-life bearings, high quality chains, belts, auto-parts and other machinery&transmission products. The company has strong stable relations with many worldwide users, the products, steel ball, steel balls, bearing accessories have been found a steady market in North & South America, South-east Asia, Europe, Middle east & some other countries & districts. Demy (D&M) Bearing will adhere a long term proinciple "Quality first, Credit first & Service first" to welcome customers both at home & abroad.