Common operations of foreign trade export agents and the required information are often integrated. . Zhou Lin2 0 1 8 0 5 0 7 7 1 1 3 0 0 Detailed discussion: The difference between a transferable letter of credit and a back-to-back letter of credit is the same in business transactions in many places, but there are fundamental differences. Among them, the original letter of "transferable letter of credit" and the new letter of credit are the same as the original issuing bank, that is, the guarantee payment is the original issuing bank.