... Low water absorption of 4-7% 3.20mm-100mm Wall thermal insulation XPS board , made from polystyrene resin and other additives, ... boardBrandHiyadCompressive strengthMinimum 150KpaMoisture permeabilityMaximum 3.0ng/(Pa. m. s)Water absorption Maximum 1.5%(in water for 96h)Density30 ... of housing, office building and factory’s wall and roof.For the cold storage insulation panels, and water resistance.Match ...