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Concrete Pumping Holdings, Inc. provides concrete pumping and waste management services in the United States and the United Kingdom. The company offers concrete pumping services to general contractors and concrete finishing companies in the commercial, infrastructure, and residential sectors under the Brundage-Bone and Capital Pumping brands; and industrial cleanup and containment services primarily to customers in the construction industry under the Eco-Pan brand. It leases and rents concrete pumping equipment, pans, and containers. As of October 31, 2023, the company owned a fleet of approximately 930 boom pumps, 90 placing booms, 20 telebelts, 300 stationary pumps, and 115 waste management trucks. Concrete Pumping Holdings, Inc. was founded in 1983 and is headquartered in Thornton, Colorado.

Color Star Technology Co., Ltd., an entertainment and education company, provides online entertainment performances and music education services in the United States and China. The company operates Color World, an online platform of curriculum that includes music, sports, animation, painting and calligraphy, film and television, life skills, etc. Its Color World platform provides celebrity lectures, celebrity concert videos, celebrity peripheral products, and artist interactive communication services. The company was formerly known as Huitao Technology Co., Ltd. and changed its name to Color Star Technology Co., Ltd. in May 2020. Color Star Technology Co., Ltd. was founded in 2002 and is based in New York, New York.

Limbach Holdings, Inc. operates as a building systems solution company in the United States. It operates through two segments, General Contractor Relationships and Owner Direct Relationships. The company engages in the construction and renovation projects that involve primarily include mechanical, plumbing, and electrical services. It also provides critical system repair, MEP infrastructure projects, maintenance contracts, building automation upgrades, data driven insights, and program management services. In addition, it offers captive engineering capabilities, estimating and virtual design; and professional engineering, energy analysis, estimation, and detail design and three-dimensional building installation coordination services. The company serves research, acute care, and inpatient hospitals; public and private colleges, universities, research centers; sports arenas; entertainment facilities, and amusement rides and parks; data centers; automotive, energy and general manufacturing plants; and life sciences, including organizations and companies, whose work is centered around research and development focused on living things. Limbach Holdings, Inc. was founded in 1901 and is headquartered in Warrendale, Pennsylvania.

Matrix Service Company provides engineering, fabrication, construction, and maintenance services to support critical energy infrastructure and industrial markets in the United States, Canada, and internationally. It operates through three segments: Utility and Power Infrastructure; Process and Industrial Facilities; and Storage and Terminal Solutions. The Utility and Power Infrastructure segment offers power delivery services, including construction of new substations, upgrades of existing substations, transmission and distribution line installations, and upgrades and maintenance, and emergency and storm restoration services. This segment also provides engineering, fabrication, and construction services for LNG utility peak shaving facilities; and construction and maintenance services to power generation facilities, including natural gas fired facilities. The Process and Industrial Facilities segment engages in the refining and processing of crude oil; fractionating and marketing of natural, gas and natural gas liquids; and offers plant maintenance, turnarounds, engineering, industrial cleaning services, and capital construction services. The Storage and Terminal Solutions segment undertakes work related to aboveground crude oil and refined product storage tanks and terminals; engineering, procurement, fabrication, and construction services related to cryogenic and other specialty tanks and terminals for LNG, NGLs, hydrogen, ammonia, propane, butane, liquid nitrogen/liquid oxygen, and liquid petroleum; and provides plant work, truck and rail loading/offloading facilities, and marine structures, as well as storage tank and terminal maintenance and repair. This segment also manufactures and sells precision engineered specialty tank products, including geodesic domes, aluminum internal floating roofs, floating suction and skimmer systems, roof drain systems, and floating roof seals. Matrix Service Company was founded in 1984 and is headquartered in Tulsa, Oklahoma.

Vallourec S.A., through its subsidiaries, provides tubular solutions for the oil and gas, industry, and energy markets in Europe, North America, South America, Asia, the Middle East, and internationally. It operates through Tubes; Mine & Forests; and Holding Companies & Other segments. The company offers seamless tubes for refineries, petrochemical facilities, and floating liquefied natural gas plants, as well as production, storage, and offloading units; VAM connections; rigid subsea line pipes and onshore rigid line pipes; and carbon steel and steel alloy tubes, hollow bars, and connections. It also provides assistance in lowering tubes, inspecting connections, and supervising assembly; thread tubes inventory management; tube inspection, maintenance, and repair services; on-site services; preparation for drilling operations; well coordination and supply services based on the drilling programs; and integrated solutions for the subsea line pipe market comprising welding, coating, insulation, bending, logistics, project management, and service agreements. In addition, the company offers tubular products for geothermal; carbon capture, utilization, and storage; and hydrogen industries. Further, it provides tubes and hollow bars, as well as circular, square, rectangular, and octagonal sections for the manufacture of cranes, construction machinery, agricultural machinery, and hydraulic cylinders; and infrastructure construction, as well as axle tubes and gearbox applications for the automotive industry. Additionally, the company is involved in the iron ore and charcoal production businesses. It serves oil service, engineering, and construction companies; distributors and industrial equipment manufacturers; and energy companies, and carbon capture and storage specialists, as well as geothermal, green hydrogen, and solar developers. Vallourec S.A. was founded in 1895 and is based in Meudon, France.