(1) Today's instruction: refers to the instruction that is effective on the day when the instruction is issued. If the transaction is not completed on that day, the instruction will automatically become invalid.

(2) Open order: it means that the order has no time limit, so unless the order is closed or cancelled, or the contract expires, the order is still valid.

(3) Opening instruction: that is, the instruction to execute the transaction immediately at the opening. The opening time is generally quite short, usually only a few minutes, and the price range of the opening price is determined by the trading counter. If the transaction is completed within this time, the order will be cancelled.

(4) Closing orders: similar to opening orders, that is, orders to execute transactions in a short time when closing positions. If there is no deal before the closing bell rings, it is invalid.

(5) Close the position or cancel the order: that is, as soon as the order arrives at the trading hall, it will be closed at its specific price or better, and it will be invalid immediately if it is not closed. This kind of instruction is also called "immediate or cancel" instruction, or "quick" instruction.

(6) Cancel the instruction: cancel the instruction that has not been executed or closed. If you are willing to correct according to the market price when canceling the order, it is feasible to reissue the next order; However, if you forget to add the cancel instruction, there is a danger that both instructions will be executed and the transaction will be completed.

2. According to the price factor, there is the following order.

(1) Market order: that is, the order is not the maximum price, but the best price available in the market at that time when the order is delivered to the exchange for trading. Pay attention to the following market orders: first, when the market turnover is large, the trend is to go up or down all the way, and the number of quotations is quite dense, of course, the following market orders are the most effective if you make new ones, because first, you can do them at the fastest speed; Secondly, since it is not liquidation, making a list is the main purpose. Second, when the market situation reverses, it is urgent to close the position to avoid being quilted. At this time, the hope of liquidation is the greatest and fastest. Third, we should avoid the current market order in the fragmented market where the prices of traded commodities fluctuate greatly and jump up and down. Fourth, the market price of an order should choose goods with large transaction volume and intensive price, because it is relatively small and easy to enter the market.

(2) Limit order: an order to buy or sell at a certain price. If the limit order is to buy, its set price must be lower than the current market price; When selling, the set price must be higher than the current market price.

(3) Stop loss order: that is, after the market price reaches a certain price, the transaction is made at the market price. When purchasing, its specific price must be higher than the current market price; When selling, its specific price must be lower than the current market price. Usually this kind of order is given when the trader has confirmed the contract. In order to prevent the wrong trend from causing too much loss, a stop loss order is given first. In order to reduce losses.

(4) Ordering by segments: that is, buying or selling orders of the same commodity contract continuously at different price gaps.

There are many kinds of instructions, but only the above ones are commonly used. Other instructions, such as scattered instructions, sequential instructions and bidding instructions, are rarely used.