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ClearSign Technologies Corporation designs and develops technologies to enhance operational performance, energy efficiency, emission reduction, safety, and overall cost-effectiveness of industrial and commercial systems in the United States and the People's Republic of China. Its ClearSign Core Burner Technology consists of an industrial burner body and a downstream porous ceramic structure or metal flame stabilizing device; ClearSign Core Plug & Play Burner technology provides direct burner replacement for traditional refinery process heaters; and ClearSign Eye Flame Sensor, an electrical flame sensor for industrial applications. The company also provides ClearSign Core Boiler Burner; and ClearSign Core Flaring Burners technologies. It serves energy, institutional, commercial and industrial boiler, chemical, and petrochemical industries. The company was formerly known as ClearSign Combustion Corporation and changed its name ClearSign Technologies Corporation in November 2019. ClearSign Technologies Corporation was incorporated in 2008 and is headquartered in Tulsa, Oklahoma.

Crawford United Corporation, together with its subsidiaries, provides specialty industrial products in the United States, Puerto Rico, Mexico, Canada, and internationally. It operates through two segments: Commercial Air Handling Equipment; and Industrial and Transportation Products. The Commercial Air Handling segment designs, manufactures, and installs large-scale commercial, institutional, and industrial custom air handling solutions to health care, education, pharmaceutical, and industrial manufacturing markets under the FactoryBilt and SiteBilt brand names. The Industrial and Transportation Products segment is involved in the manufacture of flexible interlocking metal hoses primarily to heavy-duty truck manufacturers and aftermarket suppliers, as well as to the agricultural, industrial, and petrochemical markets; and distribution of silicone and hydraulic hoses to the agriculture and general industrial markets. It also provides engineering, machining, grinding, welding, brazing, heat treat, and assembly solutions; rubber and plastic marine hose for the recreational boating industry; engineered manufacturing solutions, including CNC machining, anodizing, electro polishing, and laser marking for defense, aerospace, and medical device markets; and hydraulic hoses, air tank assemblies, and related products to manufacturers of firefighting trucks and other emergency vehicles. In addition, the company engages in the supply of highly engineered forgings for the aerospace, industrial gas turbine, medical prosthetics, alternative energy, petrochemical, and defense industries; and developing and commercializing marketing and data analytic technology applications. The company was formerly known as Hickok Incorporated and changed its name to Crawford United Corporation in May 2019. Crawford United Corporation was founded in 1910 and is headquartered in Cleveland, Ohio.

Hurco Companies, Inc., an industrial technology company, designs, manufactures, and sells computerized machine tools to companies in the metal cutting industry worldwide. Its principal products include general-purpose computerized machine tools, including vertical and horizontal machining centers, turning centers, and toolroom machines. The company also provides computer control systems and related software for press brake applications. In addition, it offers machine tool components, automation integration equipment, and solutions for job shops; and software options, control upgrades, and accessories and replacement parts for its products, as well as customer service, training, and applications support services. Further, the company provides Autobend computer control systems for press brake machines. It serves independent job shops and specialized short-run production applications within large manufacturing operations, as well as precision tool, die, and mold manufacturers in aerospace, defense, medical equipment, energy, automotive/transportation, electronics, and computer industries. The company sells its products under the Hurco, Milltronics, and Takumi brands through independent agents and distributors, as well as through its direct sales and service organizations. Hurco Companies, Inc. was incorporated in 1968 and is headquartered in Indianapolis, Indiana.

International Isotopes Inc. manufactures and sells nuclear medicine calibration and reference standards, cobalt-60 products, and radiopharmaceutical and radiochemical contract manufacturing services in the United States and internationally. It operates through four segments: Nuclear Medicine Standards, Cobalt Products, Radiochemical Products, and Fluorine Products. The Nuclear Medicine Standards segment manufactures sources and standards associated with single photon emission computed and positron emission tomography imaging, patient positioning, and calibration or operational testing of dose measuring equipment for the nuclear pharmacy industry. This segment also offers flood sources, dose calibrators, rod sources, flexible and rigid rulers, spot and pen point markers, and various specialty design items. The Cobalt Products segment produces bulk cobalt; fabricates cobalt capsules for radiation therapy and various industrial applications; and recycles expended cobalt sources. The Radiochemical Products segment produces and distributes various isotopically pure radiochemicals and sodium iodide I-131 generic drug product for medical, industrial, and research applications. The Fluorine Products segment is involved in the production of small-scale qualification samples of high purity fluoride gas for various industrial applications, as well as development of laboratory and analytical processes required to support the planned uranium de-conversion and fluorine extraction facility. The company sells its products directly to end users and distributors. International Isotopes Inc. was incorporated in 1995 and is headquartered in Idaho Falls, Idaho.