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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.

Electro-Sensors, Inc. engages in the manufacture and selling of industrial production monitoring and process control systems. Its products include shaft speed witches; wireless hazard monitoring; temperature sensor; slide gate and angle position; bearing sensors and belt alignment; and motor drive control. The company was founded by James P. Slattery in 1965 and is headquartered in Minnetonka, MN.

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. The Measurement segment designs, manufactures, and sells laser and confocal chromatic white light sensors for distance measurement and dimensional sizing products under the Acuity brand name for various industrial applications, including manufacturing, lumber production, steel casting, glass and paper production, medical imaging, crane control and micron-level part, and surface inspection. It also offers AR2700 high speed long range sensor for application in bridge crane monitoring, trolley positioning, and altitude measurements; 8-inch touch panel display, a full suite of connection ports; and satellite focused remote tank monitoring products under the Xact brand that measure the fill levels of tanks holding propane, diesel, and other tank-based liquids, as well as related monitoring services, including transmission of fill data from the tanks via satellite to a secure website for display. The Ice Cream segment manufactures, wholesales, and retails ice creams, ice cream cakes, and related products, as well as sells through its website; and serves ice cream at catering events and holds various community-building events comprising ice cream classes, and live comedy and music performances through Ample Hills Creamery brand. Schmitt Industries, Inc. was incorporated in 1984 and is headquartered in Portland, Oregon.

Sypris Solutions, Inc. engages in the provision of truck components, oil and gas pipeline components, and aerospace and defense electronics. It operates through Sypris Technologies and Sypris Electronics segments. The Sypris Technologies segment is involved in selling of forged, machined, welded, and heat-treated steel components primarily for the heavy commercial vehicle and high-pressure energy pipeline applications. The Sypris Electronics segment includes circuit card and full box build manufacturing, high reliability manufacturing, systems assembly and integration, design for manufacturability and design to specification work. The company was founded in 1997 and is headquartered in Louisville, KY.

Winland Holdings Corporation, through its subsidiaries, provides critical condition monitoring devices to the security industry. Its products are used to protect against loss of assets due to damage from water, excess humidity, extremes of temperature, and loss of power. The company offers EnviroAlert, which monitors temperature, humidity, and/or water presence in critical environments; TempAlert, a temperature monitoring device for residential and commercial environments through security systems; WaterBug, a water presence and leak detection system; and Power-Out Alert, a power outage detector. It also provides INSIGHT, an automated cloud-based platform that offers early alerting, reporting, and logging services designed to ensure regulatory compliance. The company offers its products through a network of distributors, dealers, security installers, and integrators for industries including health and medical, grocery and food services, and commercial and industrial, as well as agriculture and residential. Winland Holdings Corporation was incorporated in 1972 and is headquartered in Mankato, Minnesota.