Different from conventional production systems, the upgraded WPC foam door panel production equipment adopts a mature one-step molding process and high-precision conical twin-screw extruder as the core processing unit. This innovative structure enables direct processing of raw materials including wood powder, straw powder, recycled PVC and plastic residues without pre-granulation, simplifying the production workflow and effectively cutting down auxiliary equipment investment and manual operation costs. The optimized screw and barrel structure ensures uniform melting, mixing and foaming of wood-plastic composites under constant temperature and pressure, eliminating common defects such as uneven foaming, panel deformation and surface cracks in traditional products.