A: P/I, proforma invoice, that is, proforma invoice, is an informal invoice, which is equivalent to a contract. It should not only list transaction information, such as detailed information of goods, unit price, total amount, etc. Also add the company's bank account number so that the other party can remit money.

B: A commercial invoice is a list of delivery prices drawn by an exporter to an importer. It is the basis of bookkeeping for buyers and sellers, and it is also a general explanation for import and export customs declaration and tax payment. The contents include name, specification, price, quantity, amount, packaging, etc. It is also a necessary document for importers to apply for import declaration. Therefore, the commercial invoice is the core of the whole set of export documents. In the process of making documents, other documents need to be compiled with reference to commercial invoices.

2. Stamp and sign, scan it to the customer, and then notify the customer to sign and return it. The customer will deposit or pay in full according to the amount shown in PI.