Trade is the symmetry of bookkeeping trade, which uses freely convertible, case-by-case payments for imports and exports.
The payment for the spot trade settlement is paid by international banks one by one.
The payment received by the exporter for the goods is a freely convertible currency in the international financial market, which can be freely used to pay for imports in other countries or converted into the currency required by any country.
Spot trade indicates that buying and selling is an independent one-way transaction.
It is very convenient and is the most widely used and common mode of trade in international trade.