After curing, the thermosetting resin forms a network structure due to cross-linking between molecules, so it has high rigidity, high hardness, high temperature resistance, non-flammability, and good dimensional stability, but is brittle. As a result, most thermosetting resins are reinforced with various reinforcing materials, such as wood flour, mineral powder, fibers, or textiles, before they are molded into articles. In thermosetting resins, adding reinforcing materials and other additives, such as curing agents, colorants, lubricants, etc., can be made into thermosetting plastics, some powdery, granular, some made into a dough, sheet, collectively referred to as molding compounds. . Thermosetting plastics commonly used processing methods such as molding, laminating, transfer molding, casting, etc., some varieties can also be used for injection molding.