In terms of general-purpose additives, there are few domestic products and their performance is not outstanding. For a long time, they have only relied on several materials such as JFC and Pingping. Therefore, research and development of serialized, high-efficiency and multi-functional auxiliary products is one of the development directions of domestic leather chemicals. The development of such products mainly depends on the development of the surfactant industry, and the coupling agent is based on this. According to the actual needs of the tanning process. Reasonable selection of hydrophilic, lipophilic and HLB values. Introduce functional blocks with some special properties, and use scientific compounding methods to organically compound various surface active agents and other components. Improve its comprehensive performance, focus on the characteristics of each process, and form a series of supporting products to meet the needs of tanning.