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Ecolab Inc. provides water, hygiene, and infection prevention solutions and services in the United States and internationally. The company operates through three segments: Global Industrial; Global Institutional & Specialty; and Global Healthcare & Life Sciences. The Global Industrial segment offers water treatment and process applications, and cleaning and sanitizing solutions to manufacturing, food and beverage processing, transportation, chemical, metals and mining, power generation, pulp and paper, commercial laundry, petroleum, refining, and petrochemical industries. Its Global Institutional & Specialty segment provides specialized cleaning and sanitizing products to the foodservice, hospitality, lodging, government and education, and retail industries. The Global Healthcare & Life Sciences segment offers specialized cleaning and sanitizing products to the healthcare, personal care, and pharmaceutical industries, such as infection prevention and surgical solutions, and end-to-end cleaning and contamination control solutions under the Ecolab, Microtek, and Anios brand names. In addition, the company provides pest elimination services to detect, eliminate, and prevent pests, such as rodents and insects in restaurants, food and beverage processors, hotels, grocery operations, and other commercial segments including education, life sciences, and healthcare customers. Further, it offers colloidal silica for binding and polishing applications in semiconductor, catalyst, and aerospace component manufacturing, as well as chemical industries; and products and services that manage wash process through custom designed programs, premium products, dispensing equipment, water and energy management, and reduction, as well as real time data management. It sells its products through field sales and corporate account personnel, distributors, and dealers. Ecolab Inc. was founded in 1923 and is headquartered in Saint Paul, Minnesota.

Espey Mfg. & Electronics Corp., a power electronics design and original equipment manufacturing company, designs, manufactures, and tests electronic equipment primarily for use in military and industrial applications in the United States and internationally. The company's principal products include power supplies, power converters, filters, power transformers, magnetic components, power distribution equipment, UPS systems, antennas, and high-power radar systems for use in AC and DC locomotives, shipboard power, shipboard radar, airborne power, ground-based radar, and ground mobile power applications. It also provides various services comprising design and development to specification, build to print, design services, design studies, environmental testing services, metal fabrication, painting services, and development of automatic testing equipment. In addition, the company produces individual components, such as inductors, as well as paints, wires, qualifies, and test items; populates printed circuit boards; and fabricates metalwork. It serves industrial manufacturers and defense companies, the government of the United States, foreign governments, and foreign electronic equipment companies through its direct sales organization and outside sales representatives. Espey Mfg. & Electronics Corp. was incorporated in 1928 and is based in Saratoga Springs, New York.

NOVONIX Limited provides battery materials and development technology for battery manufacturers, materials companies, automotive original equipment manufacturers (OEMs), and consumer electronics manufacturers in North America, Asia, Australia, and Europe. It operates through Battery Materials and Battery Technology segments. The Battery Materials segment develops and manufactures battery anode materials. The Battery Technology segment develops battery cell testing equipment, performs consulting services, and carries out research and development in battery development. The company is involved in the investment and real estate borrowing activities; and offers battery technology, battery testing hardware equipment, and battery testing and development consulting services. The company was formerly known as Graphitecorp Limited and changed its name to NOVONIX Limited in July 2017. NOVONIX Limited was incorporated in 2012 and is based in Brisbane, Australia.

The SPDR S&P Aerospace & Defense ETF (XAR) is an exchange-traded fund that mostly invests in industrials equity. The fund tracks an equal-weighted index of US aerospace & defense companies. XAR was launched on Sep 28, 2011 and is managed by State Street.