Preform Moulds: 1.Mold cavity from 1 up to 72. 2. Electric control system with simulating stretch testing improve yield rate. 3. Adopt world advanced dipole taper localization technique, each cavity self-clamp independently, ensure mould concentricity. 4. The material of mould die core and die cavity are made of Sweden special mould steel. 5. International standard screw neck , imported nitrog...