ABOUT US TOPB is a manufacturer specializing in production and sell various types of industrial and auto bearings, the strength products: out diameter 30mm to 200mm metric and inch bearings, the annual output up to 3 million pcs, more than 10 years experience in OEM and ODM. The company has professional forging, heat treatment and lathed Bar processing workshop, production and management strictly enforce the ISO9001: 2000 quality system. The grinding process and CNC equipment put into use to ensure the precision achieve to P6 standard. Profile testing instrument, roundness and roughness tester, rockwell hardness, vibration detectors were equipped to manage and control the whole quality. Our staff of sales and technical support is available to help you in selecting the right for your application as well as to provide you with samples of our products for evaluation. At TOPB, we are committed to providing the highest level of customer service, competitive pricing, speedy delivery and a comprehensive, cutting-edge product offering. Our ultimate goal is your satisfaction.