1 easy to install, demolish, remove 2 save space 3 can be produce as your requirements 4 beauty appearance, peaceful Standard accessory Wall boardFoam /rock wool sandwich panel (generally 50mm or 75mm thickness), color steel sheet and polystyrene foam density inside.Roof boardFoam sandwich panel (generally 50mm thickness), color steel sheet and polystyrene foam density inside.DoorSIP, single door ...