Celestica Inc. (CLS) and Plexus Corp (PLXS) are two leading players in the electronics manufacturing services (EMS) industry. Celestica is one of the largest EMS companies in the world, primarily serving original equipment manufacturers, cloud-based and other service providers, and business enterprises across several industries. The company offers a comprehensive range of manufacturing and supply-chain solutions related to design and development, new product introduction, engineering services, component sou ...