Overdischarge of goods: refers to the goods that are not listed in the manifest or waybill, or the goods that exceed the quantity listed in the manifest, bill of lading or waybill (the proportion stipulated in the contract's over-and-short-loading clause is not an over-discharge).
Bonded supervision: refers to a customs supervision system in which goods imported by domestic enterprises approved by the customs are stored, processed and assembled at designated places in China under customs supervision, and various import taxes and fees are suspended.
When you say customs clearance, you should mean the time when the customs issues the release form after the container is declared before shipment, that is, if the container is to be delivered to the dock before the container is cut off (the cut-off time for returning the container) and the customs clearance is completed before the container is cut off, the release form can be obtained at the time when the release form is issued (generally at 12, 5 o'clock on the cut-off day).
When you say "selling foreign exchange settlement", you should refer to the export goods that have already sold foreign exchange settlement. In this way, you must first know what settlement is:
Settlement of foreign exchange refers to the behavior that the owner of foreign exchange income sells his foreign exchange income to the designated foreign exchange bank, and the designated foreign exchange bank pays the equivalent local currency at a certain exchange rate.
Goods that have been sold out for settlement of foreign exchange shall refer to goods that have been sold to foreign buyers and have received foreign exchange.