... well-done*High strength and stiffness, high weight bearing*Waterproof and sound insulation*Thermal and heat insulation*Low demand of ... door, etc Ceiling: calcium silicate ceiling, PVC ceiling Wall Deco: paint, WPC panel, Ceramic, etcAccessories: rivet, screw, glue, etcVeranda, Garage ... and fence can be customized as required two-storey prefab steel frame sandwich panel sip house