... recognized as Hi-Tech Project by Shanghai government respectively.Type:More than 350 types, including metric and inch ... bearing, angular contact bearing, plain bearing, and spherical bearing. Open type, seal rings, shields can be provided.Retainer: NYLON, PTFE, ... be used in following industries: chemical, semi-conductor, valve & pump, food, electronic, medical, vacuum, refining, insulation, etc.Note: ...