... the product is characteristics of moisture-proof and flame retardant (self-extinguishing), not variant, non-toxic, beautiful, strong ability of ... corrosion resistance, weather corrosion, waterproofing, sound insulation, thermal insulation, insulation and so on. According to customers’ requirements, we have a ... It can be used for 40-50 years; the proportion is from 0.55 to 0.7. Therefore, the perfect ...