In order to exceed the positions, customers engage in futures trading on the exchange by borrowing seats of other members or in the names of other customers, evade the position limit provisions of the exchange, and manipulate the market, and their total positions in each seat exceed the position limit of the exchange for this customer or member. "Partitioning warehouses" in building engineering is a kind of construction technology. The application of silo construction technology overcomes the negative influence of bedrock constraint effect and one-way slab effect, and effectively solves the crack problem of high strength, large volume and large aspect ratio concrete structure. Mainly solve the problem of cracks in concrete structures.