Chinese Cheap prefab tiny house in construction site

1.Safe and Durable; 
2.High Quality; 
3.Eco-friendly; 
4.Less Labor Cost

Column: double 80# C style steel 
Ground beam: 80# C style steel
Floor beam: 80# C and 50# C joint together (for 2 story house only)
Secondary floor beam: 80# C style steel (for 2 story house only)
Roof truss: 80# C style steel welding
Roof purline: 40# angle steel 
Wall panel: 50/75/90/100mm thickness EPS/Rock wool/PU sandwich panel 
Roof panel: 30/50/75/100mm thickness corrugated sandwich panel Or corrugated steel sheet
Corridor: steel plate (for 2 story house only)
Door: Steel SecurityDoor / sandwich panel door with Alu edge, included lock and key
Window: PVC frame and Alum Frame sliding window

 Prefab house, Prefabricated modural homes, Portable house for builders, Workers dormitory,  Engineering headquarters,  Labor accommodation, Temporary isolation room, Portable schools, Temporary shop, Temporary Hospital...

1)Easy to assemble and disassemble:light weight, 20~30m2 per day per people.
2)Safe & steady: seismic capability grade 7, anti-wind capacity grade 7, floor loading 1.5KN/M2.
3)Flexible layout: Various modular combinations, doors & windows could be fixed optional.
4)Durable,water proof and preventing rust: ALL the light steels dealed with anticorrosive paint.
5)Energy saving & Eco-friendly: Energy-efficient, no construction garbage, recycle use.
6)Low material cost and labor cost: Cheaper than tranditional buildings.
7)Longevity:It can work for more than 10 years under peoper use.
8)Easy to load & delivery: 300~350m2 per 40 HQ.