We manufacture balls & half balls in various sizes from Ruby, Sapphire, Ceramic and optical glass. Balls are manufactured as per
We manufacture balls & half balls in various sizes from Ruby, Sapphire, Ceramic and optical glass. Balls are manufactured as per |
Ruby ball ,sapphire crystal is one of corundum gemstones. it is mainly characterized by wear resistance, high hardness, corrosionresistance and small friction coefficient. it is an ideamaterial for precision instrument, machinery and bearing; sapphire glass has good infrared ...
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