(1) Minimum change price of product contract: the minimum change price of London gold and London silver is 0.0 1 USD;
(2) Contract unit of the product: London gold:100oz/hand, London silver: 5000oz/hand;
(3) Daily settlement time of product contracts: Tuesday to Friday at 04:00 (Hong Kong time) and Saturday at 03:00 (Hong Kong time);
(4) Trading hours of product contracts: the trading hours of local London gold and local London silver in Hong Kong are from 08: 00 Monday to 03: 00 Saturday (daylight saving time); 08: 00 Monday to 04: 00 Saturday (winter time);
(5) Trading hours of London gold in London and new york: The trading hours of London gold market are the next day 15:30- 00:30 (Hong Kong time);