A precision injection mold typically consists of the molding system, gating system, temperature control system, ejection system, and structural components. Its design and manufacturing quality directly determine the product's accuracy, appearance, and production efficiency. With the emergence of new materials (like LDS materials, bioplastics) and new processes (such as microcellular foaming, in-mold decoration), the technological scope of injection molds continues to expand.

Die-casting dies operate under extreme conditions of high temperature, high pressure, and thermal cycling. Therefore, they must be made from high-quality hot-work tool steel (e.g., H13) and possess excellent thermal fatigue resistance, thermal conductivity, and toughness. Their structure is complex, typically including the molding section, core-pulling mechanism, overflow and venting system, and efficient cooling channels.