... steel panel2. Core material---The density of this(mineral)Rock wool is: 120-250kg/m33. Side steel strip or not: 0 ... -0.6mm Polystyrene foam board: 50mm 75mm 100mm 150mm 200mmdensityRock wool 120-250kg/m3,EPS 12-35kg/m3,PU 35-50kg ... etc. Detailed parameters: 1. Composition: Core materials: EPS, XPS,Rok wool, Glass wool,PU, PUR Surface materials: PPGI, GI, Stainless steel sheet, galvalume ...