Ping pong EPS foam, thickness 10 cm. Density 2 pounds, non-collapsible foam, non-degradable, non-combustible. Metal sheet top and bottom, thickness 0.40 mm, width 80 cm, weight 8 kg per 1 meter, can bear 400 kg per meter, suitable for making a second floor or a roof, built-in ceiling, smooth floor, placing beams 2 meters apart, can be tiled or vinyl No need to level the floor, save time, save money, save labor costs If interested, send a house plan to make a quotation in the message box. 50% dep