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Customized Sapphire Glass, Sapphire Windows Cheap Price for Scanning Windows of Barcode Scanners. Extreme Hardness: Second only to diamonds with Knoop hardness of 2200 kg/mm2. High Transmittance: Transmits wavelengths from UV to Mid-Infrared with >95% efficiency. Customizable Dimensions: Size ranges from 0.2-300mm with customizable thickness and shape. Chemical Resistance: Resistant to common chemical acids and alkalis due to Al2O3 composition. Thermal Stability: High thermal conductivity with a soften temperature of 2000 K. Versatile Applications: Ideal for watches, mobile phones, lasers, LEDs, and beauty equipment. ISO9001 Certified: Manufactured under strict ISO9001 quality management standards.