... use. Application: Used for window material, mask substrate or heat insulation, optics, electronics, medical treatment, laser industries ect. Characteristics: ... :40/20 60/40 80/507, Transmittance >85%8, Coating: high anti-UV film, antireflective film, gold, aluminum, silver ... near infrared optical curve. It is characterized by small heat expansion factor, stable chemical capacity. Bubble, stripe and ...