Supplier management
Qualification, evaluation, approval, performance monitoring, corrective action, and phase-out controls.
Quality management
IATF 16949 controls from supplier to shipment.
The manufacturing quality system is certified to IATF 16949:2016 for the design and production of heat exchangers and condensers. Digital SRM, PLM, MES, and WMS workflows support traceability and closed-loop control.
IATF 16949:2016PDCA improvementBatch traceability
Six-stage process
Controlled at every handoff.
Incoming materials
Batch registration, visual inspection, laboratory checks, acceptance, traceability, and nonconforming-material handling.
Product development
Requirements review, design, prototype build, validation testing, risk analysis, launch, and production review.
Production control
MES-linked planning, first-piece inspection, process patrol inspection, automated operations, and exception handling.
Final inspection
Finished-goods batch linkage, complete inspection, acceptance identification, warehousing, and nonconforming-product control.
Continuous improvement
Customer and internal feedback, 5-Why and root-cause analysis, corrective action, verification, and standardization.
≥99.8%Incoming material pass-rate target
≥99%Finished-product pass-rate target
≤0.1%Customer complaint-rate target
Traceability evidence
Records connect the material, process, inspection, and response.
Traceability is useful only when it supports a decision. The quality workflow links each control point to documented evidence and a defined next action.
Incoming material
Supplier and batch identification, inspection result, acceptance status, and nonconformance record.
Development
Requirement review, prototype and validation records, risk analysis, change control, and launch approval.
Production
First-piece result, patrol inspection, key process data, batch linkage, exception handling, and final inspection.
Customer feedback
Affected part and batch, evidence review, containment, root cause, corrective action, verification, and closure.
Complaint handling
Evidence first, then containment and corrective action.
For a quality investigation, customers are asked to provide the PO or invoice, part number, affected quantity, batch or production code, clear photos or video, packaging and label information, and a description of the installation or operating condition.
The review then covers production records, inspection data, affected scope, verified root cause, containment, corrective and preventive action, and closure verification. Responsibility is not assumed or rejected before the evidence is reviewed.