Settlement and sale of foreign exchange is actually a foreign exchange transaction, that is, two currencies are exchanged at the agreed price, but settlement and sale of foreign exchange refers to the foreign exchange transaction between foreign currency and RMB, or the exchange between foreign currency and RMB. Because China still implements foreign exchange control, RMB and foreign currency cannot be fully exchanged. Therefore, the foreign exchange settlement and sale business is supervised by the foreign exchange administration, and the exchange needs to abide by the relevant regulations of the foreign exchange administration.

Foreign exchange preferences are generally reflected in spreads, commission rebates or gifts.