1. Easy to assemble 2. Optional Combination,Good Sealing Property 3. Heat Insulation 4. Good Earthquake Performance 20m2 Prefab House, Low-cost House,, Instant House in a boxThis Prefab House is very popular in Canada and Australia.Specification: 5870*2450mm No.Part NameMaterial1FoundationSquare Tube2Corner PostSteel3Floor BeamC Shape Steel4Roof BeamC Shape Steel5Connection PlateSteel6Edge ...