Changes must be requested before the shipping cut-off date (SI Cut-off Date) prior to the vessel's departure. Once the vessel has sailed, the shipping company will charge a high amendment fee, which may also cause delays in customs clearance at the destination port, with costs borne by the buyer.

We will provide a detailed logistics and insurance cost table from the port of origin to the destination port, but since we do not have access to the rapidly changing tariff dynamics of multiple countries, we cannot provide an absolute "Delivered Duty Paid (DDP)" calculation.

It's extremely difficult. Unauthorized modifications can lead to module current overload protection, resulting in a lock. In China, you need to use the factory online engineer account to reprogram it. It's basically impossible to perform online decoding overseas. We strongly warn against blind electrical modifications on modern integrated circuit vehicles.