(Lai Chau Newspaper) AC roof sheets have been produced in Vietnam since 1963 with the main blending components including 7-10 percent of chrysotile fiber, 90 percent of cement and other additives. With superior properties such as high elasticity and strength, good friction resistance, resistance to alkaline environment, electrical insulation, thermal insulation, persistence ect., chrysotile helps create over-50-year-old AC roof sheet products. In fact, this material has met rigorous consumer standards such as good thermal insulation, persistence under climate changes, sea steam, hoarfrost, kitchen smoke or acids in fences of cattle and poultry.