Some futures can be superimposed, and some futures cannot be superimposed.

Futures is a standardized and tradable contract. The subject matter of this contract can be a commodity, such as cotton, soybean, oil, gold, etc. Or financial instruments such as stocks and bonds. Generally speaking, investors can choose to use this contract for circulation trading in the futures trading market. The scene is completely different. Spot is a real commodity that can be traded.