accelerated weatherin,humidity resistance,salt spray test,pencil hardness,cross cut, ... , covering color vermiculite surface which carried under the high temperature technology. It would be better durability,heat resistance. TECHNICAL ... , and significant discoloraationSnow test:snow thickness 50 CM, room temperature can be maintained at around 20°Cspecification1170mm*420mm1350mm*420mm1530mm*420mm1710mm ...