After the end of the 22-hour trading day, the daily increase and decrease will be calculated, and the remaining 2 hours will be the settlement time.

On-site public bidding trading time is from 9:00 am to 2:30 pm, and the last trading day ends on the third day before the 25th of the Gregorian calendar one month before the delivery month. Over-the-counter trading is divided into four sectors, with a short break between them.