| # | Verification check | What to request / evidence | Pass | Fail | Notes / evidence ref |
|---|---|---|---|---|---|
| 1 | Legal entity & export record Weight 2 | Unified Social Credit Code, registration address, customs export record for HS 8419/8479. | |||
| 2 | Third-party certifications (verified) Weight 3 | CE, ISO 9001, AHRI/Eurovent, PED/ASME. Verify number with issuer. | |||
| 3 | Factory audit (own or 3rd-party) Weight 3 | SGS/BV/TÜV audit: WPS/PQR, NDT, brazing calibration, traceability. | |||
| 4 | Material traceability Weight 3 | EN 10204 3.1 mill certs; heat numbers match physical stamp. | |||
| 5 | Pressure & leak test evidence Weight 3 | Hydrostatic 1.3–1.5× design; helium leak <1e-6 mbar·L/s for brazed. Witnessed. | |||
| 6 | First-article inspection (FAI) Weight 2 | Sign-off against drawing before series run; referenced in PO. | |||
| 7 | References & operating sites Weight 2 | 3 reference projects in your application; call ≥1 operator. | |||
| 8 | Thermal calculation review Weight 2 | NTU-ε/LMTD sheet with fouling allowance; sanity-check vs spec. | |||
| 9 | Warranty & spare-parts policy Weight 2 | Period, exclusions, 10-yr spares, return-freight responsibility. | |||
| 10 | IP protection (NNN + jurisdiction) Weight 2 | Signed NNN with neutral arbitration venue before drawing release. | |||
| 11 | QC documentation package Weight 2 | ITP, CoC, dimensional report, packing list complete. | |||
| 12 | Incoterms & logistics Weight 1 | FOB/CIF/DDU/DDP explicit, port named, inspect-before-load. |