Option size 20ft,40ft,etc... Main material Galvanized steel structure with sandwich panel wall and doors,windows,etc. Weight 2500kg or more Color White,blue,green.brown, or customized Roof 3-4mm Hot galvanized steel structure with 4 corner casts and (1)Galvanized steel roof covering; (2)50mm -70mm eps sandwich panel or PU sandwich panel ; (3)50mm-70mm eps sandwich panel or PU sandwich panel Columns 3mm Hot galvanized steel structure Wall 50/75/100mm EPS/Rock woll/PU sandwich panel Door Made of steelaluminum frame,dimension W870*H2040mm,furnish with a handle lock with 3 keys,or sliding glass door W1500*2000mm. Window Made of PVC/aluminum fame,dimension W930*H1100mm,glazed with double glass in a thickness of 5/8/5mm. Connection kits PVC Connection kits for ceiling,floor and walls. Electricity 3C/CE/CL/SAA Standard,with distribution box,lights,switch,sockets,etc. Optional accessories Furniture,sabnitary,kitchen,A/C.electrical appliance for accomodation,office.dormitory,toliet.kitchen,bathroom,shower,steel roof,cadding panels,decorative material,etc