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Factory Customized Quartz Glass Tube Transparent Heat Resistant Glass Tube. High Purity Quartz Glass: SiO2 content exceeds 99.99%, ensuring superior optical and chemical performance. Superior Chemical Resistance: Resistant to acids and alkalis; stability is 30 times that of ceramic. High Light Transmittance: Light transmittance ranges from 85% to 95% depending on the spectrum. Customization Available: Full customization, minor customization, and flexible customization from samples or designs. Excellent Electrical Insulation: Insulation capability is 10,000 times that of ordinary glass. No Bubbles or Impurities: Manufactured without bubbles or air pipelines for high optical clarity.