First delivery date: the buyer declares its intention. Within the first delivery date, the buyer submits a letter of intent for the required goods to the exchange. The contents include variety, brand, quantity and the name of the designated delivery warehouse. The seller submits the standard warehouse receipt. The seller shall submit to the exchange a valid standard warehouse receipt that has paid the storage fee within the first delivery day.

The second delivery date: the exchange issues standard warehouse receipts. On the second delivery day, the exchange will give the warehouse receipt to the buyer according to the existing resource allocation standard.

Third delivery date: the buyer pays the money and takes the bill. The buyer must deliver the goods to the exchange and obtain the standard warehouse receipt before 2 pm on the third delivery date. The seller collects money. The exchange will pay the seller before 4 pm on the third delivery day.

Fourth and fifth delivery days: the seller pays the special VAT invoice, transfers 80% of the total payment to the seller member on the same day, and delivers the warehouse receipt of the seller member to the buyer member. When the buyer member confirms receipt of the special VAT invoice transferred by the seller member, the balance shall be settled. The transmission of invoices and the settlement of the balance shall be confirmed by the members' seals and signatures.