Entegris, Inc. engages in the development, manufacture, and supply of specialty materials for microelectronics industry. It operates through the following business segments: Specialty Chemicals and Engineered Materials (SCEM); Advanced Materials Handling (AMH); and Microcontamination Control (MC). The SCEM segment provides purity process chemistries, gases, and materials and delivery systems to support semiconductor and other advance manufacturing processes. The AMH segment develops solutions to monitor, protect, transport, and deliver critical liquid chemistries and substrates for a broad set of applications in the semiconductor industry and other high-technology industries. The MC segment offers solutions to purify critical liquid chemistries and gases used in semiconductor manufacturing processes and other high-technology industries. The company was founded in 1966 and is headquartered in Billerica, MA.