London gold refers to the trading products provided by the London International Financial Futures Exchange. It is a 400-ounce gold brick with a purity of 99.5% stored in the underground vault of the City of London.

London gold trading is not a kind of gold, but a way of precious metal margin trading. Named after its origin in London, it has a history of more than 300 years in the international market. It is the hottest gold investment method in the market at present, and is widely sought after by investors and speculators.

Td, the abbreviation of Shanghai TD Gold, is a mode of gold trading, that is, gold deferred trading. Deferred trading of gold refers to installment trading. Traders can choose to deliver on the same day or postpone delivery indefinitely.