Top Bearing Industrial Co., Ltd was established in 2000, sincerely provides a wide range of services covering the development, design, manufacture, and exports all kinds of automotive ***** Taper Roller Bearing. ( Include Metric size and Inch size)Spherical Roller Bearing. Low-noise deep groove ball bearing, . Pillow Blocks. Spherical Roller Bearing. Cylindrical Roller Bearing .Self-aligning Ball Bearing. Thrust Ball Bearing and Adapter Sleeves The material we mainly using Chrome Steel GCR15 And high Carbon Steel GCR11.