Jadezone Optical (HK) Ltd
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1.Material:China Sapphire/Europe Sapphire
2.Size and shape:31.5*30.5mm or Customized size and shape
3.OEM is welcomed
4.Blue AR coating
5.Clear Aperture:85%-95%
6.Bending strength:320-930Pa
7.Vickrs hardness:1800-2200
8.Bevel:0.1-0.5mm