Barter economy is also known as barter trade. It refers to the exchange of goods on the basis of the equivalent value of exported goods and imported goods directly combined with the mode of trade. Traditional barter trade, generally buyers and sellers of goods of equal value each exchange, does not involve the payment of money, there is no third-party intervention, barter parties to sign a contract that includes mutual exchange of offsetting goods, to determine the relevant matters. In international trade, barter is more often used by means of a folio letter of credit. \x0d\ Direct barter\x0d\ Direct barter is also known as general barter. In the strict legal sense, barter means exchange of goods for goods. This form of direct barter often requires that imports and exports be transacted at the same time, and that a single transaction generally involves only one contract that includes the delivery of mutually offsetting goods by both parties and does not involve a third party. It is the most common and currently the most widely used form of barter. \x0d\ Consolidated barter\x0d\ Consolidated barter is mostly used for transactions between two countries under bookkeeping or payment (clearing) agreements. By the two governments in accordance with the signed payment agreement, in the two sides of the bank mutual accounts, by the two sides of the bank on the basis of shipping documents for the settlement of foreign exchange and in the other country in the Bank opened an account for bookkeeping, and then by the bank in accordance with the agreed period of time to settle.