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A. O. Smith Corporation manufactures and markets residential and commercial gas and electric water heaters, boilers, heat pumps, tanks, and water treatment products in North America, China, Europe, and India. The company offers water heaters for residences, restaurants, hotels, office buildings, laundries, car washes, and small businesses; boilers for hospitals, schools, hotels, and other large commercial buildings, as well as homes, apartments, and condominiums; and water treatment products comprising point-of-entry water softeners, well water solutions, and whole-home water filtration products, and point-of-use carbon and reverse osmosis products for residences, restaurants, hotels, and offices. It also provides commercial water treatment and filtration product; expansion tanks, commercial solar water heating systems, swimming pool and spa heaters, and related products and parts; and electric wall-hung, gas tankless, combi-boiler, and heat pump and solar water heaters. The company offers its products under the A. O. Smith, State, Lochinvar, Hague, Water-Right, Master Water, Atlantic Filter, and Water Tec brands. It distributes its products through independent wholesale plumbing distributors, as well as to retail channels consisting of hardware and home center chains, and manufacturer representative firms; and offers Aquasana branded products directly to consumers through e-commerce channels. A. O. Smith Corporation was founded in 1874 and is headquartered in Milwaukee, Wisconsin.

Lincoln Electric Holdings, Inc., through its subsidiaries, designs, develops, manufactures, and sells welding, cutting, and brazing products worldwide. The company operates through three segments: Americas Welding, International Welding, and The Harris Products Group. It offers brazing and soldering filler metals, arc welding equipment, plasma and oxyfuel cutting systems, wire feeding systems, fume control equipment, welding accessories, and specialty gas regulators, and education solutions, as well as a portfolio of automated solutions for joining, cutting, material handling, module assembly, and end of line testing, as well as involved in brazing and soldering alloys, and in the retail business in the United States. In addition, the company manufactures copper and aluminum headers, distributor assemblies, and manifolds for the heating, ventilation, and air conditioning sector in the United States and Mexico; provides specialty welding consumables, wear plates and maintenance and repair services for alloy and wear-resistant products used in mining, steel, agricultural, and industrial mill applications; and designs and manufactures robotic assembly and arc welding systems that automate the tacking and welding of steel beams. Further, the company serves general fabrication, oil and gas, power generation, process, automotive and transportation, and construction and infrastructure industries, as well as heavy fabrication, ship building, and maintenance and repair markets. It sells its products directly to users of welding products, as well as through industrial distributors, retailers, and agents. The company was founded in 1895 and is headquartered in Cleveland, Ohio.

Pentair plc provides various water solutions in the United States, Western Europe, China, Eastern Europe, Latin America, the Middle East, Southeast Asia, Australia, Canada, and Japan. The company operates through three segments: Flow, Water Solutions, and Pool. The Flow segment designs, manufactures, and sells fluid treatment and pump products and systems, including pressure vessels, gas recovery solutions, membrane bioreactors, wastewater reuse systems and advanced membrane filtration, separation systems, water disposal pumps, water supply pumps, fluid transfer pumps, turbine pumps, solid handling pumps, and agricultural spray nozzles for fluid delivery, ion exchange, desalination, food and beverage, separation technologies in the oil and gas industry, residential and municipal wells, water treatment, wastewater solids handling, pressure boosting, circulation and transfer, fire suppression, flood control, agricultural irrigation, and crop spray in residential, commercial, and industrial markets. The Water Solutions segment provides commercial and residential water treatment products and systems, including pressure tanks, control valves, activated carbon products, commercial ice machines, conventional filtration products, and point-of-entry and point-of-use water treatment systems, as well as installation and preventative services for use in residential whole home water filtration, drinking water filtration, and water softening solutions, as well as commercial total water management and filtration in foodservice operations. The Pool segment provides residential and commercial pool equipment and accessories comprising pumps, filters, heaters, lights, automatic controls, automatic cleaners, maintenance equipment, and pool accessories for applications in residential and commercial pool maintenance, pool repair, renovation, service, and construction and aquaculture solutions. Pentair plc was founded in 1966 and is headquartered in London, the United Kingdom.

Tetra Tech, Inc. provides consulting and engineering services in the United States and internationally. The company operates through two segments, Government Services Group (GSG) and Commercial/International Services Group (CIG). The GSG segment offers early data collection and monitoring, data analysis and information management, science and engineering applied research, engineering design, project management, and operations and maintenance services; and climate change and energy management consulting, as well as greenhouse gas inventory assessment, certification, reduction, and management services. This segment serves federal, state, and local governments; and development agencies in water resources analysis and water management, environmental monitoring, data analytics, government consulting, waste management, and a range of civil infrastructure master planning and engineering design markets. The CIG segment provides early data collection and monitoring, data analysis and information management, feasibility studies and assessments, science and engineering applied research, engineering design, project management, and operations and maintenance services; and environmental remediation and reconstruction services, and industrial water treatment services. This segment serves natural resources, energy, and utilities markets, as well as sustainable infrastructure master planning and engineering design for facilities, transportation, and local development projects. Tetra Tech, Inc. was founded in 1966 and is headquartered in Pasadena, California.