... as enviromental manufacturing Hangzhou guangke new window film CO.,LTD is a company specialized in designing ... pigment of Good membrane is unmistakable in the film, durable, Not easily discoloration. the paste process ... than 70% light transmission. 5.Insulation: Solar film is good or bad depends on the insulation, ... there’s some problem with the film, it’s a poor film. Metallized Polyester Solar Window ...