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).

Of course. Our system supports single unit orders. However, objectively speaking, the shipping booking fees, documentation processing fees, and customs clearance fees for a single vehicle are very high. We recommend that individual buyers calculate the total landing cost before making a decision.

Because it's not a one-time transaction. Only by ensuring compliance checks, improving after-sales service, and providing parts can a good reputation be established, leading to repeat purchases and long-term cooperation.