... from outside to inside are hanger, colour steel sandwich panel, glass wool and wall paper; can waterproof, soundproof, heatproof. 2. ... floor. 3.floor: The mainly material are: shape beam, roof purlin, floor board, concrete, wood floor; the main second ... floor can quakeproof well. 4.Roof:The main structure are : shape beam, ceiling, roof purlin, sandwich roof panel, glass wool, colour steel sandwich ...