Color steel sandwich material: rock wool color steel series color plate is the strongest performance of a new type of fire-resistant fire protection board. By the natural rock light steel mobile home factory, iron blast furnace slag and other high temperature melt into light steel wire activities in house prices, then after curing. Rock wool color steel clean room compliance with fire safety requirements two mobile homes install light steel structure, interior ceiling, the best structure housing construction activity decorative plates. It has a fire resistance of 600 ℃, fire rating to A-level. There is polystyrene polyurethane can not be compared. Its core material is not burning wool. Color steel trends: focus on new coatings development of light steel structure prefabricated house, for general polyester, polyvinylidene fluoride (PVDF) and plastisol make improvements, achieve superior color reproducibility, UV, sulfur dioxide, improve corrosion sex; development of pollution-resistant, heat and other functional coatings.