GrafTech International Ltd. research, develops, manufactures, and sells graphite and carbon-based solutions worldwide. It offers graphite electrodes to produce electric arc furnace steel and other ferrous and non-ferrous metals; and petroleum needle coke, a crystalline form of carbon used in the production of graphite electrodes.

Advanced Energy Industries, Inc. designs, manufactures, sells, and supports precision power conversion, measurement, and control solutions worldwide. It offers plasma power solutions, including direct current (DC), pulsed DC, low frequency alternating current, high voltage, and radio frequency (RF) power supplies, as well as RF power supplies, RF matching networks, and RF instrumentation products; and remote plasma sources for reactive gas applications.

Pioneer Power Solutions, Inc., together with its subsidiaries, designs, manufactures, sells, and services electric power systems, distributed energy resources, used and new power generation equipment, and mobile EV charging solutions in the United States, Canada, and internationally.

Nortech Systems Incorporated provides design and manufacturing solutions for electromedical devices, electromechanical systems, assemblies, and components in the United States, Mexico, and China.

Richardson Electronics, Ltd. engages in the power and microwave technologies, customized display solutions, and healthcare businesses in North America, the Asia Pacific, Europe, and Latin America.

Schmitt Industries, Inc., together with its subsidiaries, designs, manufactures, and sells test and measurement products worldwide. The company operates through two segments, Measurement and Ice Cream.

AstroNova, Inc. designs, develops, manufactures, and distributes specialty printers, and data acquisition and analysis systems in the United States, Europe, Asia, Canada, Central and South America, and internationally.