... finished products or semi-finished products. 2. Provide quality assurance for one year. 3. Durable in use. 1. Specialized technology, ... 2. Professional production equipment, precise testing equipment, fashioned grinding wheel and strict control of backlash.3. Quality assurance: ISO9001.4 ... . Offer orders according to clients' OEM NO., for instance,SKF, IB, SNR, IRB, NSK, BCA, etc., ...