... Steel Structure BuildingsThe best plan from design to installation will be made based on your basic requirement.Materials Used:1,Major & Minor ... 3,Doors & Windows: UPVC, Aluminum Alloy, and the others will be supplied based on actual demand. 4,Certification:good quality is the foundation ... steel structure 15000 ton, which ensures that we can finish some project in an urgent time. 6,Design capacity: a ...