NdFeB Magnet, SmCo Magnet, AlNiCo Magnet manufacturer / supplier in China, offering Ruby Bearing for Watch Compasses Synthetic Sapphire Cutomize Ball Bearing Sapphire Nozzle, Precision Gem-Bearings/ Jewel Bearing / Watches' Gem-Bearings, Synthetic Sapphire Ring Washer Ball Ruby Nozzle Ruby Watch Compasses Jewel Bearing and so on.