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a High-Quality and Glare-Proof Sapphire Glass Optical Lens for Radio Players. Extreme Hardness: Mohs hardness of 9, second only to diamond, ensuring superior scratch resistance. Customizable Options: Supports customization for shape, size, coating, and design from samples or drawings. Excellent Chemical Resistance: Resistant to strong acids and bases, insoluble in water, with Class 1 water resistance. Versatile Applications: Ideal for aerospace, medical devices, semiconductors, and high-end consumer electronics. Multi-Coating Support: Available with AR, HR, hydrophobic, and conductive coatings to meet specific needs.