Distinguishing real manufacturers from traders—and capable ones from risky ones—requires systematic verification.
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| Item | What to Check |
|------|---------------|
| Equipment | Tube rolling/welding machines, filling stations, test benches |
| Materials | Traceable material stock, grade certificates |
| Process control | In-process inspection points, travelers/routers |
| Test lab | Meggers, hipot testers, ovens, spectrometer |
· ISO 9001 certificate (verify number with registrar)
· Incoming material inspection records
· Test reports for recent shipments
· Calibration records for test equipment
· Refuses unannounced video call → likely trading company
· No test equipment visible → no quality control
· Quotes far below all others → material substitution risk
· No material certificates → cannot verify alloys
· Payment to personal account → scam risk
1. Resistance test vs. calculated R = U²/P
2. Insulation ≥50MΩ at 500V
3. Dimensional check of critical features
4. Surface finish and weld quality
5. Weight check (reveals material thickness shortcuts)
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Thirty minutes of structured verification prevents costly sourcing mistakes.
**BANBEKE** welcomes factory audits and provides complete verification documentation.
**BANBEKE Industrial Heaters**
· Website: senxte.com