We use two steps: 1. Insert a medical-grade endoscope through the spark plug hole to visually inspect cylinder wall scratches and carbon buildup on the piston top; 2. Extract an engine oil sample to check for large metal debris or emulsification (caused by coolant leakage).

4S dealership records are directly connected to the manufacturer's database, making the data hard to tamper with and the most reliable, with original parts guaranteed; third-party repair shops usually are not connected, making their data unverifiable. Therefore, we only consider the connected records from 4S dealerships as valid historical documentation.

Under FOB terms, booking is a legal obligation of the buyer. If your freight forwarder fails to provide the shipping order (S/O) in time, resulting in vehicles exceeding the free storage period at our warehouse or port, the buyer will have to pay the high daily storage fees before shipment.