2. Quotation unit: USD/oz

3. Trading time:

The bidding transaction time is from 08: 20 to 13: 30 on the same day.

Electronic trading after hours is from Monday to Thursday: 14: 00 to 08: 00 the next day.

Friday: 14: 00 to the same day: 17: 15.

Sunday: 18: 00 to 08: 00 the next day.

Transaction month: in the next two calendar months, 10 in all February, April and August, 23 months, and 12 months in all June and 60 months.

4. Minimum price fluctuation: 0. 10 USD/oz, i.e. 10 USD/lot, and the point value is 100 USD/lot.

5. Last trading day: the third trading day before the last working day of each month.

6. Delivery cycle: from the first working day to the last working day of the delivery month.

7. Futures-spot conversion (EFP): The buyer or seller can use the same number of futures contracts to convert spot positions; EFP can be used to open or close positions.

8. Grade and quality requirements: the purity shall not be lower than 99.5%.