The PVC special screw solves the problems of decomposition, corrosion, and uneven plasticization in PVC processing through corrosion-resistant materials, low shear structures, and precise temperature control design. It is the core component for efficient and stable production of PVC products. Processing materials: hard PVC (UPVC), soft PVC (SPVC), PVC pipes, profiles, plates, sheets, cable materials, etc. Industry: Building materials (doors and windows, pipelines), packaging, wires and cables, automotive parts.