... hardness, good anti-corrosion 3.good thermal insulated capacity eps sandwich panelEPS sandwich panel for roof, width:960mm or 980mmthickness:50,75,100 ... :7-20 kgs/m3, steel sheet:0.2-0.6mmEPS sandwich panel for roofLength:unlimited,<12m due to transportColor:blue,white and ... insulation core between them. The insulating core can be mineral wool, polyurethane, polyisocyanurate, or polystyrene.