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Environmental Tectonics Corporation, together with its subsidiaries, operates as an engineered solutions company in the United States and internationally. It operates in two segments, Aerospace Solutions (Aerospace) and Commercial/Industrial Systems (CIS). The Aerospace segment engages in the design, manufacture, and sale of aircrew training systems to commercial, governmental, and military defense agencies; training devices, including altitude and multiplace chambers to governmental and military defense agencies, and civil aviation organizations; and advanced disaster management simulators to governmental organizations, original equipment manufacturers, fire and emergency training schools, universities, and airports, as well as provides integrated logistics support services. The CIS segment is involved in the design, manufacture, and sale of steam and gas sterilizers to medical device and pharmaceutical manufacturers, as well as universities; and environmental testing and simulation systems primarily to commercial automotive, as well as to heating, ventilation, and air conditioning manufacturers. This segment also provides parts, as well as upgrade, maintenance, and repair services. The company markets its products through independent sales representatives and distributors. Environmental Tectonics Corporation was incorporated in 1969 and is headquartered in Southampton, Pennsylvania.

Lightscape Technologies, Inc. does not have significant operations. Previously, it was engaged in the development of digital out-of-home advertising and light-emitting diode solutions. The company focuses on seeking new business opportunities or engage in a merger or acquisition with an unidentified company. The company is based in North Las Vegas, Nevada.

Manhattan Scientifics, Inc., a technology incubator, engages in the development and commercialization of life-enhancing technologies in the United States. It develops technologies in the areas of nano-technologies and nano-medicine. The company offers nanostructured bulk metals and alloys in the form of rod, bar, wire, and foil for medical implants and other applications. The company was formerly known as Grand Enterprises, Inc. Manhattan Scientifics, Inc. was founded in 1992 and is based in New York, New York.

TNR Technical, Inc. engages in the design, assemble, and market of batteries and multi-cell battery packs to a variety of industrial, commercial, and retail markets. It includes alkaline cells, lithium cells, lithium coin cells, silver oxide and sealed lead acid batteries, and battery chargers. The company was founded on October 4, 1979 and is headquartered in Sanford, FL.

mPhase Technologies, Inc. provides artificial intelligence and machine learning focused technology products and related services. It offers mPower EV Charging Network; and Consumer Engagement Platform to understand behavior patterns of consumers and allows the retailers to make these just in time offers available to the end consumer as they travel. mPhase Technologies, Inc. was founded in 1979 and is headquartered in Rockville, Maryland.