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ABCO Energy, Inc., together with its subsidiaries, operates as an electrical product and services supplier in the United States. The company sells and installs solar photovoltaic electric systems that allow customers to produce power on their residence or business property. It also sells and installs energy efficient lighting products, solar powered streetlights, and lighting accessories to residential and commercial customers. In addition, the company offers solar leasing and long term financing programs to its customers, and other marketing and installation organizations. Further, the company provides operations and maintenance services to residential and commercial customers. The company was formerly known as ENYC and changed its name to ABCO Energy, Inc. in October 2011. ABCO Energy, Inc. was founded in 2004 and is based in Tucson, Arizona.

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.

Real Goods Solar, Inc. operates as a residential and small business commercial solar energy engineering, procurement, and construction company in the United States. The company's Residential segment installs solar energy systems for homeowners, including lease financing, as well as small business commercial services in the continental United States. Its Sunetric segment installs solar energy systems for homeowners and business owners in Hawaii. The company's POWERHOUSE segment manufactures and sells solar shingles. The company Real Goods Solar, Inc. offers solar energy services, including design, procurement, permitting, build-out, grid connection, financing referrals, and warranty. The company markets its products and services through an outside sales team, inside sales, e-sales, and customer referral programs, as well as an online direct marketing channel. Real Goods Solar, Inc. was founded in 1978 and is headquartered in Denver, Colorado.