... ,Self-locked, Adjustable, Shut-off nozzle,PET preform mould,With hot runner system. 1.The mould is not only with the advantage of ... the independently auto-lock preform mould, but also adopted the pneumatic valve gate equipment, to open ... the production.4.Prevent phenomena of salivating of the preform when open the mould.5.To prevent the screw such of material ...