... anti-corrosion 3.good thermal insulated ca eps sandwich panel production lineEPS sandwich panel for roof, width:960mm or 980mmthickness:50,75 ... kgs/m3, steel sheet:0.2-0.6mmEPS sandwich panel for roofLength:unlimited,<12m due to transportColor:blue,white ... them. The insulating core can be mineral wool, polyurethane, polyisocyanurate, or polystyrene. EPS and Rock wool sandwich panel forming machine