1)Color:yellow,blue,pink 2)Density:35-40kg/m3 3)1800*600*20~100mm 4)Fireproof Grade B1 or B2 XPS insulation board is extruded polystyrene insulation material with high density. It has smooth surface through extrusion, and has completely closed cell inside. This kind of material has excellent heat insulate performance, high moisture resistance, lightweight, excellent compressive strengths, and ...