duble screws extrusion, Co2 foaming, low energy, super production capacity 800kg/hour, and ... , Water-proof, Noise-elimination, Anti-corrosion, Anti-aging, Light-weight, High Compressive Strength and Low Moisture permeability.Application:Perimeter Insulation, Inverted ... Insulation, Frost Protection for Road and Rail Construction. XPS Insulation Sheet Extrusion Line