An OBD scan is one of the most cost-effective tools in a remote pre-purchase inspection, but you need to know what it can and cannot tell you. What it reveals well: current and stored fault codes across the engine, transmission, ABS, airbag, and body modules. A car with dozens of cleared codes in multiple modules may have electrical problems or a history of tampering. It also shows readiness monitors — if all monitors show 「not ready」 on a car that claims to be freshly serviced, the codes were probably cleared recently to hide something. What it reveals with the right software: live data. You can watch engine idle stability, coolant temperature under load, transmission shift behavior, and battery cell voltages on EVs. Abnormal fuel trims or misfire counters can flag worn injectors or coils before any warning light appears. What it cannot do: prove real mileage (odometers can be corrected digitally), detect physical accident repairs, or judge paint and rust. Practical advice: ask your inspector for a full-system scan report with screenshots, not just a 「no codes」 verbal summary. For Chinese brands, make sure the tool supports their protocols — mainstream scanners cover BYD, Geely, and Chery well, but some small brands need brand-specific software.

Timing your shipment can save both money and weeks of waiting. Several predictable patterns affect routes from China. Peak season surcharges: January through March, before Chinese New Year, exporters rush to ship, so container and RoRo space tightens and rates rise 20-50%. Book at least 3-4 weeks ahead during this window. After the holiday (usually February), factories and ports restart gradually, causing 2-3 weeks of backlog. Weather effects: Typhoon season (July-September) can delay departures from southern Chinese ports like Shenzhen and Guangzhou. Winter fog and ice affect northern ports like Dalian and Tianjin, slowing loading operations. Destination-side factors: Monsoon seasons can slow port operations in South and Southeast Asia. Holiday periods at destination (e.g., Ramadan in the Gulf, year-end holidays elsewhere) reduce customs staffing and extend clearance times. Practical advice: ask your forwarder for rate calendars, avoid booking right before major Chinese holidays, and build 1-2 weeks of buffer into delivery promises to your customers. Flexible departure ports (Shanghai vs. Ningbo vs. Shenzhen) can also help you find available space.

The headliner is considered an "irreversible interior component." If the edges are delaminated or there are deep, hard-to-clean dark water stains, it will directly lead to a downgrade in the interior grade, even if it does not affect driving. We will not use pins or low-quality glue for cosmetic repairs.