... Main Advantage: This ultra-thin composite panel is very easy to install ,so it can reduce time, room and expenses cost ... , and did many test, it is very firm and safe to use.6- Other Advantage: Light-weight, strong, smooth flat, ... concussion, resistance to fire and anti-chemical corrosion, anti-efflorescent, long-time lasting to stop climates, and resistance to pollution ,easily to clean. stone polymer ...