Prefabric house

Buyers must prioritize structural integrity and material durability. Key specs include the galvanized steel frame thickness (typically 2.5mm to 4.0mm for load-bearing), wall panel insulation (EPS, Rock Wool, or PU with a density of at least 12kg/m³ for thermal efficiency), and wind resistance ratings (should withstand Grade 10-12 winds). Ensure the floor system uses MGO boards or cement fiber boards for moisture resistance.

Compliance varies by destination. For the US market, look for ASTM standards and local building codes (IBC). For the EU, CE marking and EN 1090-1 (execution of steel structures) are essential. Additionally, ensure all electrical and plumbing components meet UL or CSA (North America) or CE/CB (Europe/Oceania) certifications to pass local inspections.

Focus on the U-value of the envelope; lower values indicate better insulation. Request details on thermal bridge designs to prevent energy loss. Many premium suppliers on Made-in-China.com offer solar-ready roofing and double-glazed Low-E glass windows as standard upgrades to meet modern green building requirements.

A top-tier manufacturer should offer BIM or CAD architectural design support to allow for layout adjustments. They should provide options for exterior cladding (e.g., PVC, wood-plastic composite, or metal carved boards) and interior finishes to match specific aesthetic or functional needs, such as temporary offices, labor camps, or luxury villas.

The biggest risks are shipping damage and missing components. Because these are 'kits,' a single missing bag of specialized bolts can halt construction. Always demand a detailed packing list and photos of the loading process. Use Made-in-China.com's Secured Trading services to ensure payment is only released after proof of shipment and quality verification.

Prefab houses are usually shipped in 40ft HC containers or as Flat Packs. Negotiate for SOC (Shipper Owned Container) if the site is remote, as this avoids high container demurrage fees. Clarify the Incoterms; for large projects, DAP or DDP is preferred if the supplier has local logistics partners, but FOB offers more control over freight costs.

Verify if the supplier provides installation manuals, 3D videos, or remote video guidance. For large-scale projects, negotiate the inclusion of an on-site supervisor in the contract. Ensure the contract includes a warranty period (typically 1-5 years for the structure) and a clear policy for replacing parts damaged during transit.

Conduct a factory audit or hire a third-party inspector (like SGS or Intertek) to verify the manufacturer's production capacity. Always use Letter of Credit (L/C) or Escrow-based payment systems for large transactions. Prioritize Diamond or Gold Members on Made-in-China.com who have a proven track record of international exports.