Detailed Product DescriptionQuick Detail: It is different size of head of screw, which has many kind of material, such as Bi-metal, stainless steel, for special plastic materialDescription: Two-metal screw with high wear resistance, suitable for glass fiber reinforced plasticTwo-thread, double-lead screw, with better plasticizing capacity and faster speed of plasticizing, which is suitable for large machine High mixing screw, suitable for the materials with high requirements of mixing and plasticizing, like PP,ABS,TPU

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