U-470 system is an improover suitable china's situation ,base on the USA building system style.It is imporoved in it's accessories.It become more suitable for project.

This 760 bite type corrugated galvanized Hidden Screw roofing sheets could be better to solve the heavy rainfall caused by water leakage.

Aluminum Magnesium Manganese is an alloy composed of metal Aluminum, Magnesium metal and Manganese metal. Metal Aluminum Magnesium Manganese alloy is widely recognized as architectural design due to its structural strength, weather resistance, stain resistance and easy bending and welding. High quality materials for metal roofing system with a service life of more than 50 years.