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Western Digital is a leading, vertically integrated supplier of hard disk drives. The HDD market is a practical duopoly with, Western Digital and Seagate being the two largest players. Western Digital designs and manufacturers its HDDs, with much of the manufacturing and workforce located in Asia. The primary consumers of HDDs are data centers.
West Pharmaceutical Services is based in Pennsylvania, US, and is a key supplier to firms in the pharmaceutical, biotechnology, and generic drug industries. West sells elastomer-based packaging components (including stoppers, seals, and plungers), non-glass containment solutions, and auto-injectors for injectable drugs, which include large molecule biologics, peptides such as GLP-1 receptor agonists, and small molecule drugs. The company reports in two segments: proprietary products (about 80% of total revenue) and contract-manufactured products (about 20% of total revenue). It generates approximately 55% of its revenue from international markets and 45% from the United States.