Compared with ordinary roofs, it can save costs in the same demand. It can be anti-corrosion, heat insulation, leakage-proof, natural waterproof and dripping water is not leaking, light weight, less investment in the foundation. The overall performance is better, the layout is more reasonable, the seismic performance and wind resistance are excellent, its safety factor is higher, durability, comfort, sound insulation are very good. It has long service life, low protection
