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AAON, Inc., together with its subsidiaries, engages in engineering, manufacturing, marketing, and selling air conditioning and heating equipment in the United States and Canada. The company operates through three segments: AAON Oklahoma, AAON Coil Products, and BASX. It offers rooftop units, data center cooling solutions, cleanroom systems, chillers, packaged outdoor mechanical rooms, air handling units, makeup air units, energy recovery units, condensing units, geothermal/water-source heat pumps, coils, and controls. The company markets and sells its products to retail, manufacturing, educational, lodging, supermarket, data centers, medical and pharmaceutical, and other commercial industries. It sells its products through a network of independent manufacturer representative organizations and internal sales force, as well as online. The company was incorporated in 1987 and is based in Tulsa, Oklahoma.

Mestek, Inc., together with its subsidiaries, manufactures and sells heating, ventilating, and air conditioning products and equipment; and metal forming equipment in the United States and internationally. The company offers equipment for heating, ventilation, and air conditioning primarily under the Lockformer, lowaPrecision, Engel, and Lion brands; roll forming and flexible fabrication equipment; metal stamping products, including uncoilers, straighteners, press feeds, and dies; and coil metal processing products, including cut-to-length, multi-blanking, and coil slitting and precision corrective levelers. It also provides a range of aftermarket services, such as OEM replacement parts for existing and used equipment, and on-site service support and training services. In addition, it engages in equipment rebuilding and electrical installation works; and tube and pipe production and fabrication. Further, the company offers custom metal-framed skylights, canopies, curtain walls, covered walkways, rain screens/wall-cladding, structural glass/point fixed glass, and ornamental metal products. Additionally, it provides operable and fixed solar shading louver systems; and architectural louvers, grilles, vision screens, penthouses, and brise soleil fixed sunshades. Mestek, Inc. was founded in 1898 and is based in Westfield, Massachusetts.

Notis Global, Inc., provides services to the hemp and marijuana industry. It engages in the cultivation, extraction and product development. The company was founded on June 16, 1977 and is headquartered in Middletown, NJ.

Tecogen Inc., together with its subsidiaries, designs, manufactures, markets, and maintains ultra-clean cogeneration products for multi-family residential, commercial, recreational and industrial use in the United States and internationally. It operates through three segments: Products, Services, and Energy Production. The Products segment designs, manufactures, and sells industrial and commercial cogeneration systems. Its Services segment provides operations and maintenance services for products under long term service contracts. The Energy Production segment sells energy in the form of electricity, heat, hot water, and cooling to customers. The company also offers natural gas-powered cogeneration systems, chillers, and heat pumps products for water and space heating, and air conditioning. Its product portfolio includes InVerde e+ and TecoPower, cogeneration units for the supply electricity and hot water; Tecochill, an air-conditioning and refrigeration chillers, and hybrid-drive air-cooled and gas engine-driven chillers to produce chilled water and hot water; Tecofrost, a gas engine-driven refrigeration compressors to circulate refrigerant and provide hot water as a byproduct; and Ultera, an emissions control technology. In addition, the company provides long-term maintenance contracts, parts sales, and turnkey installation for products through a network of field service centers. The company sells its products to healthcare, housing and hospitality, education and government, industrial, agriculture, and breweries markets through in-house marketing, as well as independent sales agents and representatives. Tecogen Inc. was incorporated in 2000 and is headquartered in Waltham, Massachusetts.