1, High visible light transmission 2, High UV reduction 99% 3, Clear and ... Good membrane is unmistakable in the film, durable, Not easily discoloration. the paste process by scraper scrape will not decolorize. But ... transparent bullet-proof membrane, and it is more than 70% light transmission. 5.Insulation: solar film is good or bad depends ... the film, it’s a poor film. Black Frosted Light-proof Film