COMET Holding AG manufactures x-ray apparatus and tubes. It operates through the following segments: Plasma Control Technologies, X-Ray Systems, Industrial X-Ray Modules and ebeam Technologies. The Plasma Control Technologies segment develops, manufactures and markets vacuum capacitors, RF generators and RF impedance matching networks for the high-precision control of plasma processes required. The X-Ray Systems segment develops, manufactures and markets stationary and mobile x-ray systems and services for non-destructive testing using x-ray and microfocus technology and computed tomography.The Industrial X-Ray Modules segment develops, manufactures and markets highly compact x-ray sources and portable x-ray modules for non-destructive testing, steel metrology and airport security inspection. The ebeam Technologies segment develops, manufactures and markets compact ebeam sets and whole ebeam systems for the treatment of surfaces in the food and printing industries. The company was founded by Gerhard Steck in 1948 and is headquartered in Flamatt, Switzerland.