... cage, seals, shields, adaper sleeves, locknut2. Material: Chrome Steel, Stainless Steel, Carbon Steel, Ceramic, Brass, Bronze3. ISO 9001-2000 certificate, high quality4 ... well as other relevant mechanical and electrical products. Insisting on the aim of "Quality First; Credit Uppermost; Customer ... with standard management and the best service, based on the demand of market, grasping the chance timely ...