Polystyrene foam is widely used in buildings, hotels, apartment roofs, walls, central air conditioning, building industry acoustic insulation, roofing and other parts of shockproof polystyrene foam insulation plates combined with other roofing materials together to form a roof covering system EPS foam insulation Material can play insulation, energy saving effect. Expanded polystyrene, also known as polystyrene, EPS foam insulation from the polymerization of styrene suspension, adding a blowing agent in the system. White bead-like particles, relative density 1.05. Low thermal conductivity EPS foam insulation quality, water absorption. Resistance to shock and vibration, thermal insulation, noise, moisture, vibration. Excellent dielectric properties. Soluble in acetone, ethyl acetate, benzene, toluene, dichloroethane, chloroform, insoluble in ethanol, n-hexane, cyclohexane, gasoline and other solvents. Foam board insulation box can be made of polystyrene foam is a center of the new approach to packaging materials, insulation materials. It has a light weight, impact resistance, easy molding, beautiful shape, bright color, high efficiency and low price, widely used and so on.