prefabricated steel structure building, including warehouse ,workshop, hangar, factory, office building, supermarket, chicken house and so on.
main structure use H steel(IPE,IPN,HD,UB,UC )and C steel
ROOF and wall use galvanized steel sheet or sandwich panel( rockwool,fiberglass,PU,EPS)
use high strength bolts to connect together
http://www.twchinasteelstructure.com