West Pharmaceutical Services is a global manufacturer of integrated containment and delivery systems for injectable drugs and healthcare products, serving biologic, generic, pharmaceutical, diagnostic, and medical device companies worldwide. The company operates through two segments: Proprietary Products, which supplies elastomers, stoppers, seals, syringe and cartridge components, drug containment solutions, self-injection devices, films, coatings, and analytical lab services to ensure drug compatibility and stability; and Contract-Manufactured Products, which designs and manufactures complex devices including multi-component molded parts, assembled components, and other complex pharmaceutical and medical device applications. West generates revenue from both proprietary product sales and contract manufacturing services, with manufacturing facilities spanning North and South America, Europe, and Asia, and derives raw materials primarily from elastomers, aluminum, and plastic supplies.