The die head is made of high quality alloy tool steel, and the flow channel is plated with hard chromium. The coating is 0.02 ~ 0.03mm, and the roughness is Ra0.005μm, which is corrosion resistant. Barrel, screw with high precision, wear resistance, corrosion resistance, double mixing structure, uniform mixing, high plasticizing performance; Hard tooth bevel gear reducer, direct transmission; Temperature control adopts PID control, fast transmission speed, high precision; The rolling roller adopts spiral sink structure, the cooling water distribution is reasonable, the roller surface temperature is uniform (±1℃), the surface is plated with hard chrome mirror polishing, the roughness is Ra0.005μm, the coating hardness is HV?850.