PVC is one of the most widely used thermoplastics in injection molding. PVC injection molding is a heat-sensitive, precision process that requires strict control over temperature, pressure, and time to prevent material degradation. The material's hardness can be adjusted through the addition of plasticizers, broadly classifying it into two categories: rigid PVC and flexible PVC. It possesses excellent flame retardancy, chemical resistance, and cost-effectiveness, and is widely utilized in fields such as construction fittings, electrical components, medical devices, and daily consumer goods.