2. Within 5 minutes before the opening of each trading day, the first 4 minutes are the time for investors to declare the trading price of futures contracts, and the last 1 minute is the time for call auction matchmaking. The price generated in call auction is the opening price, which will be immediately displayed in the quotation column.
3. call auction can only use the price limit entrustment declaration, but not the market price entrustment declaration.
4. Accordingly, the trading system will gradually match the top buy declaration and sell declaration until the transaction cannot be completed.