1.Good insulation property 2.Low water absorption 3.Thickness:20mm-100 with color of green,Blue,red,etc. Detailed product description:Hiyad’s XPS extruded polystyrene foam insulation board, made from polystyrene resin and other additives, by continuous process of extrusion,become a rigid foam board, called XPS insulation board. Thanks to the extrusion process,the surface is very even with closed- ...