1. Main structure: rectangular steel tube, h section steel, t section steel and angle steel. 2. Wall, floor and roof cladding: alc panel and gypsum board 3. Roof tile: asphalt shingle 4. Roof waterproof: sbs coil 5. Roof insulation: xps board or fiber glass wool 6. Stairs: steel wood composite stairs or solid wood 7. Exterior wall: waterproof painting 8. Water system: ppr pipe for water and pvc pipe for drainage 9. Doors: anti-theft steel door for entrance and wood composite door for rooms 10. Windows: pvc or aluminum, sliding or tilt and turn windows 11. Rainspout: pvc pipe 12. Floor: capet, engineer flooring or cemic tiles.