1. Capital barrier aluminum rolling industry is a capital intensive industry. The production of aluminum strip and foil, especially the mass production of high-precision aluminum strip and foil, needs modern hot continuous rolling production line. The hot rolling production line has the characteristics of large investment, and it is difficult for enterprises with weak strength and small scale to build hot continuous rolling production line, so it is difficult to achieve rapid development in the industry. In addition, due to the large proportion of aluminum ingot in the product cost, aluminum ingot procurement And the production and operation turnover needs to occupy a large amount of working capital, so the manufacturers investing in this industry must have strong financing ability, and there are certain capital barriers for new investors to enter the industry.2. The mature technology and special alloy formula of technical barrier are the basis for the survival of aluminum plate, strip and foil production enterprises. Compared with the general manufacturing industry, aluminum rolling industry has higher requirements on technology and production experience accumulation. For example, for alloy plate series products, different customers have different requirements for the variety, brand and product status of alloy plate. Therefore, in the process procedures, alloy melting, cold rolling plate shape control, annealing, stretch bending straightening and other links require not only accurate technical parameters, but also the enterprise's equipment Have mature technical management ability. A large number of small and medium-sized enterprises are unable to form large-scale production and enter the international market because of immature operation technology, low yield and unstable product quality.