... of our over twenty years research, accumulate of experience and technology advantages, Equipped with the special screw it can ... such as PVC, PE, PBT, Nylon, lower smoke and no-halogen material and fluorine plastic to produce wire, cable, optic fiber, ... nitrided, with special constructionGearbox: Cogs has been carbonized, hardened and polished. The gearbox has high capacity, compact size, stability ...