LED Lighting Quality Control & Factory Inspection FAQ

{“@context”:”https://schema.org”,”@type”:”FAQPage”,”mainEntity”:[{“@type”:”Question”,”name”:”How do I verify LED product quality before shipment?”,”acceptedAnswer”:{“@type”:”Answer”,”text”:”Three methods: Request pre-shipment samples from your production batch, hire third-party inspection (SGS, Bureau Veritas, TUV, Intertek) using AQL sampling, or visit the factory yourself. Kingseng recommends third-party inspection for first-time buyers.”}},{“@type”:”Question”,”name”:”What is AQL sampling and what level should I use?”,”acceptedAnswer”:{“@type”:”Answer”,”text”:”AQL (Acceptable Quality Limit) is the international standard for batch inspection. For LED lighting, AQL 2.5 for visual/cosmetic inspection and AQL 1.0 for functional/safety testing is industry standard. Kingseng default: AQL 2.5 Level II.”}},{“@type”:”Question”,”name”:”What tests do you perform on LED products?”,”acceptedAnswer”:{“@type”:”Answer”,”text”:”Photometric testing (lumens, CCT, CRI), electrical safety (hipot, ground continuity), thermal testing, environmental (IP ingress protection), lifetime testing (LM-80/TM-21), and mechanical testing. Full test reports provided for every order.”}},{“@type”:”Question”,”name”:”What certifications does Kingseng hold?”,”acceptedAnswer”:{“@type”:”Answer”,”text”:”ISO 9001:2015, ETL Listed (US/Canada), CE (EU), RoHS, FCC, and DLC Premium (energy efficiency). Products can also be tested to UL, SAA, and other country-specific standards upon request.”}},{“@type”:”Question”,”name”:”Can I do a factory audit before placing an order?”,”acceptedAnswer”:{“@type”:”Answer”,”text”:”Yes. Kingseng welcomes factory audits by buyers or third-party inspectors. Our factory in Longgang District, Shenzhen is open Monday-Saturday. Virtual video tours are also available. Schedule at least 1 week in advance.”}},{“@type”:”Question”,”name”:”How do you handle defective products after delivery?”,”acceptedAnswer”:{“@type”:”Answer”,”text”:”Kingseng warranty: 2 years for LED fixtures, 3 years for drivers, 5 years for housings. Defective units are replaced at our cost or credited on your next order. We include 1-3% free spare units with every order.”}},{“@type”:”Question”,”name”:”What is Kingseng quality rejection rate?”,”acceptedAnswer”:{“@type”:”Answer”,”text”:”In-factory defect rate under 0.5%. Post-shipment defect rate under 0.3%. Customer rejection rate under 0.1%. Achieved through ISO 9001 processes, automated optical inspection on PCB assembly, and 100% burn-in testing on all LED drivers.”}}]}