... Polystyrene 3. Color coated steel sheet 4. Fine fireproof EPS board (roof,wall) EPS Sandwich Board1.Fine fireproof 2.Light in ... steel sheet + EPS (polystyrene)Structurethree layers:upper layer is steel sheet, the inner layer (core material) is EPS sandwich, the bottom ... , warehouses, cold storage; 3. Long-span roof; 4. Add layer of the original building, temporary office; 5. Shops, markets, sentry ...