Different types of futures have different rules. At present, except for gold, silver, copper, sugar, rapeseed oil, rapeseed meal and glass, they are unilateral charges for closing positions in the day, and others are bilateral charges.

Futures, usually futures contracts, are contracts. A standardized contract made by a futures exchange to deliver a certain amount of subject matter at a specific time and place in the future. This subject matter, also known as the underlying asset, can be a commodity, such as copper or crude oil, a financial instrument, such as foreign exchange and bonds, or a financial indicator, such as three-month interbank offered rate or stock index. Futures trading is an inevitable product of the development of market economy to a certain stage.