Gerresheimer is a company that manufactures and sells packaging products and drug delivery systems. It operates through three divisions: Plastics and Devices, Primary Packaging Glass, and Advanced Technologies. The Plastics and Devices division offers inhalers, insulin pens, prefillable syringes, and diagnostic solutions. The Primary Packaging Glass division provides infusion, dropper, and syrup bottles, injection vials, ampoules, cartridges, etc. The Advanced Technologies division develops auto-injectors and micro pumps for the subcutaneous delivery of liquid drugs.