We will never perform blind deep disassembly unless there are clear severe fault codes or extreme noises. The sealing of the engine and transmission is crucial, and compromising the factory seals to investigate non-existent issues is unprofessional. We rely on data flow and external acoustic and fluid analysis to make judgments.

Start with the business license: every legitimate Chinese company has a Unified Social Credit Code. Ask for a copy and verify it on the National Enterprise Credit Information system or via your freight forwarder. Check that the business scope includes 'used car export'—this requires specific qualifications. Next, look for proof of substance: a real office or yard (verify via live video call, not pre-recorded), staff answering on Chinese business platforms like WeChat with consistent branding, and a corporate bank account in the company's name—never pay a personal account. Cross-check trade history: ask for recent shipping documents (blurred bills of lading with customer info hidden), references from buyers in your region, and whether they hold export licenses issued by Chinese commerce authorities. Red flags: prices far below market, pressure to pay quickly, refusal of video calls, or bank accounts in third countries 'for convenience'. Take your time—real exporters pass these checks easily.

Cross-border after-sales support mainly comes from three channels: 1. Contract terms: Reputable exporters commit in the sales contract to engine and gearbox coverage for 30 days after pickup, excluding wear-and-tear items. Get this in writing before paying. 2. Inspection report: The pre-shipment inspection report is your baseline. If the car arrives with problems that contradict the report (e.g., hidden accident damage not disclosed), you can file a claim against it. 3. Parts supply: For mainstream Chinese brands, spare parts channels exist in Russia, Central Asia, the Gulf, and Africa. Many exporters will help you source and ship parts after delivery. Practical tips: inspect the car on arrival and photograph everything; report any issue in writing within 48 hours; keep all shipping documents. Claims filed weeks later are hard to prove.