Shanghai Research Institute of Materials (SRIM), is nationally renowed as both the industial supplier and government approved quality evaluation and material testing center. Ceramic Ball (Bearing) R&D Department (SHCBB), as its branch, is expertised in manufacturing ceramic balls and other related products. Our production lines range from ceramic bearings, ceramic ball valves, ceramic balls, ceramic bearing ring blanks, to hybrid alloy balls. The SHCBB&＃039;s technical origins can be dated back to the 1990s. Many worldwide recognized companies, including pump valve manufacturers, oil production equipment suppliers, and those precision measuring instruments companies, are our customers for years.