The core process of chemical fiber production is spinning, the core of spinning is the spinning machine, and the core of the spinning assembly is the spinneret (head). Although the spinneret is only one part of the component, it has become the core of the core spinning technology.

The spinning process of chemical fiber is different, the spinneret (head) used is also different. Although the spinneret (head) is only a part, it is a series of products that can be raised infinitely in the vertical direction and extended infinitely in the horizontal direction. There are dry spinning, melt monomer spinning, and composite spinning. Such as polyester filament, staple filament, nylon filament, acrylic filament, staple filament, viscose fiber, acetate filament and so on. Industrial textiles have developed rapidly in recent years. In particular, the development of high-tech fibers such as spandex, carbon fiber, aramid fiber, polysulfide fiber and biomass fiber in recent years has put forward higher requirements for the coordination of spinnerets.

The reason why the spinneret has become a core technology product is that its key parts and functions in process use are that the geometry and processing accuracy need to be designed according to the requirements of process use.