Obtaining precise internal resistance at different SOC levels requires disassembling the battery pack and connecting it to a professional charge-discharge cabinet for several days of cycling tests. This is beyond the scope of non-destructive used car inspections; we only provide real-time estimated internal resistance data based on OBD port readings.

Typically you will need: 1. The commercial invoice and packing list from the seller; 2. The bill of lading issued by the shipping line; 3. The vehicle's export customs declaration; 4. The original registration certificate and a deregistration or transfer proof from China; 5. A certificate of origin if your country requires it; 6. Destination-specific documents, such as a pre-shipment inspection certificate (for example ECTN for West African ports). Requirements vary by country, so confirm the full list with your customs broker before shipment.

We use a calibrated high-precision paint thickness gauge to take multiple measurements on at least 13 metal surfaces of the entire vehicle. The original paint thickness of mainstream Chinese models typically ranges from 90μm to 150μm. If any area exceeds 200μm or even reaches over 500μm, we will directly conclude that the area has undergone bodywork and filler repair.