2. The Shanghai Stock Exchange is complicated, some varieties are not allowed, and some can enter the delivery month, and it is not necessary to deliver when entering the delivery month.

3. Varieties that can enter the delivery month must adjust their positions to an integer multiple of the specified number of lots before entering the delivery month.

4. For example, aluminum, copper and zinc should be adjusted to an integer multiple of 5 lots; AG should be adjusted to an integer multiple of 2 lots; AU should be adjusted to an integer multiple of 3 batches; RB and WR should be adjusted to integer multiples of 30 lots.

5. Individual customers should adjust to 0 lots on the third trading day before the last trading day.