Shanghai Songshi Mechanical Transmission Co., Ltd. located in the center of Yangtze River area, the most economically developed regions in China, the Oriental Pearl City-Shanghai. The company is a production and sales enterprise that engaged in bearing research and development, design, production, sales, integration of industry and trade for many years and has more than 40 years for production. At present, it has an annual production capacity of 20 million sets of bearing products.