Customized Ruby Bearings Al₂O₃ Jewel Bearings for Precision Instruments and Watch Movements Ruby Bearing Product Overview Customized ruby bearings are made from synthetic corundum (Al₂O₃) doped with ...Δείτε περισσότερων
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Customized Ruby Bearings Al₂O₃ Jewel Bearings for Precision Instruments and Watch Movements