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WOCHANG’s multi-stage quality assurance:
Material Testing: In-house spectroscopy, mechanical testing, and corrosion resistance checks.
Process Control:ISO 9001-certified production with batch traceability.
Third-Party Validation:Partner labs for critical certifications.
Continuous Monitoring:Statistical process control at all manufacturing stages.

We stand by our quality with a case-by-case resolution policy:
Quality issues: Full replacement/refund upon verification by our QC team (72-hour response).
Non-conforming specs:Free return/reprocessing if deviations occur from agreed technical parameters.
Order errors:Contact within 48 hours of delivery for logistical solutions.