All our measuring instruments (especially calipers, paint thickness gauges, and refrigerant pressure gauges) are calibrated quarterly according to ISO quality management system requirements to ensure the data we provide you is objective, accurate, and reliable.

We maintain an absolute skeptical attitude. In addition to regular visual inspections, we focus on checking for sediment accumulation around the sunroof drainage channels and look for water stains under the A-pillar trim and front floor mats. This is the only effective physical evidence to determine if the sunroof drainage holes are blocked, leading to hidden leaks.

We will provide extremely accurate production year, first registration date, and Chinese emission standards (e.g., National VI). However, the final responsibility for confirming whether this data complies with the importing country's regulations lies with the buyer, and you need to submit it to the local customs for verification before placing an order.