... in summer, it can resist 90% of infrared light , and lower indoor temperature 5 C ~ 7 C, so the air-conditioning may save energy ... %. But in winter, it can block infrared light out, so that increase the indoor temperature 3 C ~5 C, save energy 30% ~ 40%. So ... energy-saving effect.2. With water as solvent, it is non-toxic, tasteless, security and environmental protection3.Strong film adhesion, good ...