... to meet different oversea customer's requriements. Steel structure productsDescription:*Certificate: ISO 9001:2008,CE*Material ... Hot dip galvanized,Spray painting,Power coated,black steel*Dimension: Various type, diversity design,according to ... many for each wall, and where to install them.4.Wall and roof material: corrugated steel sheet or EPS ... if have4).earthquake load if have Light steel structure