sapphire bearing parts with hole, Al2O3 single crystal glass ,sapphire optical glass ingots, sapphire optical rods,sapphire optical stick,Al2O3 single ...
3x3mm 200mm 300mm length sapphire glass bar rod with groove straight flange Wear and corrosion resistance hardness 9.0 sapphire bearing for rolling .....
sapphire bearing parts with hole, Al2O3 single crystal glass ,sapphire optical glass ingots, sapphire optical rods,sapphire optical stick,Al2O3 single ...