Profile: Hunprenco Group of Companies is a manufacturer of plungers and coolers for the glass container industry. We are certified with ISO 9001 quality certification. We supply plungers to the glass container industry for NNPB and standard press/blow process. We obtain tube coolers by using swaging dies manufactured in-house to cover a wide range of tube sizes in both mild steel and stainless steel. The swaging technique we involve in ensures a uniform wall thickness and maintains concentricity to give supportive base fit and assembly also allowing the internal tip profile to smoothly follow the external tip profile to improve cooling air flow within the plunger. We also manufacture a wide range of machine parts including adaptors, split collars, vertiflow plates, mould arm inserts, pistons and sleeves. We also enhance with four axis CNC vertical/horizontal milling, CNC turning centres, drilling, grinding, honing and conventional machining services.