(1) Concentric diversification strategy. The original product and the new product have different basic uses, but they have strong technical relevance.(2) Horizontal diversification strategy. The original product and the new product have different basic uses, but they are closely related to sales.(3) Vertical diversification strategy. The characteristic is that the basic uses of the original product and the new product are different, but there is a close correlation between the product processing stage or the production and circulation.(4) Overall diversification strategy. Overall diversification needs sufficient funds and other resources, so it is adopted by large companies with strong strength.