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Borosilicate 3.3 Glass Lens Disk Sheet. High Transmittance: Optical glass windows offer transmittance greater than 95% for clear visibility. Customizable Options: Special sizes, materials, and coatings are available upon request. Protective Coatings: Available with AR and AS coatings for waterproof, fireproof, and scratch-proof functions. Wide Application: Suitable for mobile phones, cameras, GPS, car mirrors, and industrial optical systems. Precision Tolerances: Length/Width tolerance +/-0.01, Center thickness tolerance 0.005mm, Parallelism <=1min-2sec. ISO9001 Certified: Manufacturing process and quality control meet ISO9001 standards.