Extension of related knowledge points:
Spot silver, also known as international spot silver or London silver, is a contract transaction based on the principle of capital leverage. Different from what we usually say, it requires the delivery procedures to be completed within 1 ~ 2 working days after the transaction is completed, but some investors do not actually deliver silver after the transaction is completed, but just close their positions at maturity to earn the difference profit. Spot silver trading takes USD as the currency unit and ounces as the contract unit, and the price changes with the change of the market. The trading weight is 1 ounce, that is, 1 hand, and the trading unit is 100 ounce or its multiple. Investors can buy the trading right of 1 00 ounces of silver at the price of1ounce, and use the trading right of 100 ounces of silver to buy up and sell down, so as to earn the difference profit.