... retardant. the former has the following advantages light weight, convenient,low cost and this type is fit ... protect the steel of panelslifetime15~20 yearsCharacterLight in weight, heat insulation,waterproof,environmentalUsevarious roofs and walls referring ... workshops (tempkeeping,heat insulation,weight bearing,weatherproof,rich color and good appearance) Light self-weight 8~40kg/sqm Width950mm,960mm ...