Changzhou Boyan Optical Co., Ltd. is a multi-product high-tech company specializing in the research, development, production and sales of flat windows, crystals ,optical components ,wafers & substrates and coated glassed.The company mainly provides colored glass, colorless glass, infrared filters, ultraviolet filters, far-infrared crystals, lenses, prisms, cylindrical lens, sapphire wafers, silicon wafers and various coating productsThe application band of product materials ranges from ultraviolet to mid-far infrared such as: fused quartz, sapphire, magnesium fluoride, lithium fluoride, barium fluoride, silicon, germanium, zinc selenide, zinc sulfide and various colored and colorless optical materials .