The difference between futures short fiber 2 1 1 contract and 30 1 contract is that the contract term is different. 2 1 1 represents the short fiber futures contract due for delivery in May, 202/kloc-0, and the short fiber futures contract 30 1 is the short fiber futures contract due for delivery in May, 2003/kloc-0. These two attributes are different, and they are information displayed according to relevant information.