We are offering thiss hua marine technology co., ltd, that subsidiary of hua marine service co., ltd, were specialized in infrared optics windows 15 years, sapphire crystal (max.220mm)that's widely used in barcode reader, probe, filter, bearing, endoscope and our advantage products. And the other optical materials are germanium, zinc selenide, caf2, mgf2, baf2, silicon, fused quartz.
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