... , 4mm, 5mm Width: 0.61m Length: 20m ~ 30m Ceramic paper of one side coated with Alu. FoilIt uses ceramic paper with thickness ... of 1mm, 2mm, 3mm, 4mm and 5mm which stand 1250oC to ... compound with Alu. Foil 22um to improve its properties of heat insulation.Specification: 0.61m x 20m~30m/roll. And ...