Baseline Acceptable Quality Limit Qualification Matrix Setup
A clear AQL matrix binds defect classification to statistical sampling tables, shifting commercial re-inspection costs to factories on lot failures.
Lot Rejection Protocol
Meaning
Quality assurance frameworks define formal administrative sequences executed when a manufactured production batch fails pre-shipment sampling criteria. Activating a lot rejection protocol stops shipment authorization and initiates formal non-conformance documentation between foreign buyers and Chinese manufacturers. The procedure governs containment and disposition of rejected inventory, terminating once parties agree on actionable remediation or batch cancellation.
Formal Notification
Inspection agencies issue official failure certificates immediately after sample evaluations breach acceptable defect thresholds. The inspection report details precise failure metrics, sample size calculations and defect classifications under agreed inspection standards. Buyers transmit these findings alongside a written notice of rejection to factory management, establishing the legal date of dispute notification under commercial contracts.
Disposition Procedure
Manufacturers receiving formal rejection notices must quarantine the affected production lot immediately. Factory managers coordinate with buyer technical representatives to choose between total batch rework or complete production destruction. Sorting protocols require re-inspecting every unit, whereas rework procedures require explicit engineering approval before execution.
Re-inspection of remediated batches follows strict secondary sampling criteria to verify compliance before release.
Contractual Consequence
Sales agreements stipulate financial obligations arising from batch rejections. Factories bear re-inspection costs and face liquidated damages for delivery delays caused by rejected production.