According to the current copper price of more than 50,000 tons in the previous period, because the contract is 10 tons, and the expansion board will be expanded during the holiday period, the price limit of the last transaction before the holiday and the price limit of the first trading day after the holiday this year is calculated as 10%. Roughly speaking, the price will fall by more than 5 thousand, and the price will lose more than 50 thousand

Take the main contract 20 1 1 as an example, the settlement price on September 30th is 50940, 10, and the daily limit on the first trading day after 10 may need to be reduced by 5 100 (or it may only be reduced by 5090. I don't know whether the daily limit is four rooms or four rooms.

If it is not a holiday or unilateral ups and downs, it is 8%, and the daily limit is about 40,000 yuan.