Verify ISO9001 quality management system certification and compliance with industry standards (DIN, IEC) for M16 connectors to ensure production standardization.
Evaluate production capacity, on-time delivery rate and customization capability (e.g., special pin configurations, custom materials) to meet batch procurement needs.
Request third-party test reports including insulation resistance, voltage withstand and IP rating verification to confirm product performance.
Confirm technical support system, warranty policy and return/exchange procedures to ensure long-term after-sales guarantee for bulk orders.
Technical Note: For large-scale bulk procurement, conduct on-site audits of suppliers' production lines and request pre-shipment sampling inspection to avoid batch quality issues.
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