1. Natural persons of Zhengshang Institute and Dashang Institute cannot enter the delivery month because they cannot accept VAT invoices.

2. But CICC can.

3. The Shanghai Stock Exchange is more complicated, some varieties can't, some can enter the delivery month, and there is no need to deliver when they enter the delivery month.

4. 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.

5. 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.

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