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Quanta Services is a leading provider of specialty contracting services, delivering comprehensive infrastructure solutions for the electric and gas utility, communications, pipeline, and energy industries in the United States, Canada, and Australia. Quanta reports its results under three reportable segments: electric power, renewables infrastructure, and underground utility and infrastructure. In 2021, the company acquired Blattner, a provider of comprehensive engineering, procurement, and construction solutions to customers in the renewable energy industry.

Cummins is the top manufacturer of diesel engines used in commercial trucks, off-highway machinery, and railroad locomotives, in addition to standby and prime power generators. The company also sells powertrain components, which include transmissions, turbochargers, aftertreatment systems, and fuel systems. Cummins is in the unique position of competing with its primary customers, heavy-duty truck manufacturers, who make and aggressively market their own engines. Despite robust competition across all its segments and increasing government regulation of carbon emissions, Cummins has maintained its leadership position in the industry.

CNH Industrial is a global manufacturer of heavy machinery, with a range of products including agricultural and construction equipment. One of its most recognizable brands, Case IH, has served farmers for generations. The company's products are available through a robust dealer network, which includes over 3,600 dealer and distribution locations worldwide. CNH’s finance arm provides retail financing for equipment to its customers in addition to wholesale financing for dealers, which increases the likelihood of product sales.

Caterpillar is the top manufacturer of heavy equipment, power solutions, and locomotives. It is currently the world’s largest manufacturer of heavy equipment. The company is divided into four reportable segments: construction industries, resource industries, energy and transportation, and Cat Financial. Its products are available through a dealer network that covers the globe with about 2,700 branches maintained by 160 dealers. Cat Financial provides retail financing for machinery and engines to its customers, in addition to wholesale financing for dealers, which increases the likelihood of Caterpillar product sales.