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Geospace Technologies Corporation designs and manufactures instruments and equipment used in the oil and gas industry to acquire seismic data in order to locate, characterize, and monitor hydrocarbon producing reservoirs. The company operates through three segments: Oil and Gas Markets, Adjacent Markets, and Emerging Markets. The Oil and Gas Markets segment offers wireless seismic data acquisition systems and reservoir characterization products and services, as well as traditional seismic exploration products, such as geophones, hydrophones, leader wires, connectors, cables, marine streamer retrieval and steering devices, and other seismic products. The Adjacent Markets segment provides industrial products, including imaging equipment, water meter products, remote shut-off valves, and Internet of Things platform, as well as seismic sensors for vibration monitoring and geotechnical applications, such as mine safety and earthquake detection applications; and electronic pre-press products that employ direct thermal imaging, direct-to-screen printing systems, and digital inkjet printing technologies targeted at the commercial and industrial graphics, textile, and flexographic printing industries. The Emerging Markets segment designs and sells products used for border and perimeter security surveillance, cross-border tunneling detection, and other products targeted at movement monitoring, intrusion detection, and situational awareness. This segment serves various agencies of the United States government, including the Department of Defense, Department of Energy, Department of Homeland Security, and other agencies. The company operates in Asia, Canada, Europe, South America, the United States, and internationally. Geospace Technologies Corporation was founded in 1980 and is headquartered in Houston, Texas.

Image Sensing Systems, Inc. develops and markets video and radar processing products for the intelligent transportation systems industry worldwide. The company operates through two segments, Intersection and Highway. It offers various vehicle and traffic detection products, including Autoscope video systems and RTMS radar systems that convert sensory input collected by video and radar modules into vehicle detection and traffic data used to operate, monitor, and enhance the efficiency of roadway infrastructure. The company provides its video and radar processing products for use in traffic applications, such as intersection control, highway, bridge and tunnel traffic management, and traffic data collection. It markets and sells its products to end users comprising federal, state, city, and county departments of transportation, port, highway, tunnel, and other transportation authorities, as well as system integrators or other suppliers of systems and services who are operating under subcontracts in connection with road construction contracts. Image Sensing Systems, Inc. was founded in 1984 and is headquartered in Saint Paul, Minnesota.

Know Labs, Inc. focuses on the development and commercialization of proprietary technologies in the United States. Its technology uses spectroscopy to direct electromagnetic energy through a substance or material to capture a molecular signature. The company refers to its technology as Bio-RFID. The Bio-RFID technology can be integrated into various wearable, mobile, or bench-top form factors. Its first application of Bio-RFID technology is a product marketed as a glucose monitor that provide the user with real time information on their blood glucose levels. The company was formerly known as Visualant, Incorporated and changed its name to Know Labs, Inc. in May 2018. Know Labs, Inc. was founded in 1998 and is headquartered in Seattle, Washington.

Midwest Energy Emissions Corp., an environmental services and technology company, engages in developing and delivering solutions to the power industry in the United States and internationally. It provides mercury capture solutions. Its Sorbent Enhancement Additive (SEA) technology provides total mercury control with solutions that are based on a thorough scientific understanding of actual and probable interactions involved in mercury capture in coal-fired flue gas. The company also involved in the extracting and processing of rare earth elements. Midwest Energy Emissions Corp. is headquartered in Corsicana, Texas.

Sierra Monitor Corporation provides industrial Internet of things solutions that connect and protect infrastructure assets to the industrial and commercial facilities management market in the United States and internationally. It offers FieldServer family of protocol gateways, routers, and network explorers for system integrators and original equipment manufacturers to enable local and remote monitoring and control of assets and facilities; and Sentry IT flame and gas detection solutions used by industrial and commercial facilities managers to protect their personnel and assets. The company sells its solutions to telecommunication companies and their suppliers. Sierra Monitor Corporation was founded in 1978 and is headquartered in Milpitas, California.