... 3.Lasts for 10 years Heat insulation product 1. If you put the transparent heat insulation coating on the glass in summer, it can ... C ~5 C, save energy 30% ~ 40%. So it has a significant two-way energy-saving effect.2. The coating let ... non-toxic, tasteless, security and environmental protection.5. It has a simple and convenient construction, could be brushing, and spraying to ...