1. gold deferred delivery business is referred to as AU(T+D). It is mainly a futures trading mode in which traders can choose to deliver or postpone delivery on the contract trading day, and at the same time introduce a deferred compensation mechanism to stabilize the contradiction between supply and demand.
2. The label of Wanchun Gold is (AU9999), also known as Wanchun Gold. China already has GB/T25933-20 10 "and the national standard of AU99999 high purity gold. The gold content and nomenclature of gold jewelry are defined in GB11887-2012. Thousands of pure gold is called "AU999", and its gold content is ≥999‰, (99.9%).