... use can exempt ultraviolet, ozone, the harmful effects of water and chemicals. 5),Through the "double 85", 1,000 hours ... physical and mechanical performance and anti-yellowing determination, the "double 85" means the relative temperature is 850C, relative humidity is 85 ... not hesitate to contact us.We will give you a competitive qotation.Hoping to cooperate with you! the type used for solar panel