... rate% < 5 Detailed parameters:1. Composition: Core materials: EPS, Rock wool, Glass wool, Surface materials: PPGI, GI, Stainless steel sheet, galvanized sheets, ... 120mm it will increase 12m practical area, for 100m2 house, it will increase 4.16m2 Waterproof and damp resistant ... the professional design, reasonable price of our portable container house will be most attractive. Hope we can do business ...