Gerresheimer AG manufactures and supplies glass and plastic products for the pharmaceutical and healthcare industry. It operates through the following segments: Plastic and Devices and Primary Packaging Glass. The Plastic and Devices segment includes insulin pens, inhalers and refillable syringes as well as diagnostics and medical technology products such as skin-prick aids and test systems and pharmaceutical plastic containers for liquid and solid medicines. The Primary Packaging Glass segment refers to the primary packaging made of glass of medicines and cosmetics such as pharma jars, ampoules, injection vials, cartridges, perfume flacons and cream jars, and special containers for food and drinks. The company was founded in 1864 and is headquartered in Duesseldorf, Germany.