China 25.4X4mm 22.35X4mm 30X5mm 37X7mm Protective Window Optical Ar Coating Glass Windows, Find details about China Laser Cutting Machine Protective Window 25mmx3mm, Laser Protection Lens from 25.4X4mm 22.35X4mm 30X5mm 37X7mm Protective Window Optical Ar Coating Glass Windows
1.1 Materail: USA Imported quartz;
1.2 Double surface film;
1.3 Light transmittance is more than 99.8%