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Burnham Holdings, Inc. designs, manufactures, and sells boilers and related heating, ventilation, and air conditioning products and accessories for residential, commercial, and industrial applications in the United States and internationally. Its residential hydronic heating products include cast iron, stainless steel, and steel boilers; cast iron and steel heat distribution products; radiators; and warm air furnaces and central air conditioning systems for the residential heating and cooling markets, including units for the manufactured housing industry. The company's commercial and industrial heating products comprise a range of cast iron, stainless steel, fire tube, water tube, copper tube boilers, and water heaters; and boiler room accessories that are used for various applications, such as military bases, multi-unit residential buildings, health care, government, education, and hospital facilities. The company sells its residential products through wholesale distributors to builders, heating contractors, fuel dealers, and utilities for resale to end-use customers; and commercial products primarily through independent sales representatives, directly to contractors, or end users. Burnham Holdings, Inc. is based in Lancaster, Pennsylvania.

Ebang International Holdings Inc., through its subsidiaries, engages in the research, design, and development of application-specific integrated circuit chips and manufacture of Bitcoin mining machines under the Ebit brand in Singapore, Hong Kong, Australia, the Bahamas, and internationally. It also provides mining machine hosting services; and engages in the development of proprietary cryptocurrency exchange platform. In addition, the company offers fiber-optic communication access devices, including multiprotocol label switching fiber-optic access network devices, multi-service access platform integrated business access devices, and wavelength-division multiplexing fiber-optic devices; and enterprise convergent terminal products, which consists gigabit passive optical network, Fiber to the Room products, passive optical network converged gateways, enterprise cloud gateway devices, industrial Internet of Things access devices, and business enterprise smart wireless access devices. It serves the blockchain and telecommunications industries. The company also operates a cross-border payment and foreign exchange platform. It sells its blockchain products directly, as well as through its website; and telecommunication products under the EBANG brand name primarily through supplier contracts. The company was incorporated in 2018 and is headquartered in Hangzhou, China.

QS Energy, Inc. develops and commercializes energy efficiency technologies in the United States and internationally. The company's energy efficiency technologies assist in meeting energy demands, enhancing the economics of oil transport, and reducing greenhouse gas emissions. Its intellectual properties include a portfolio of domestic and international patents, which have been developed in conjunction with and licensed from Temple University of Philadelphia, Pennsylvania. The company's primary technology comprises Applied Oil Technology, a commercial-grade crude oil pipeline transportation flow-assurance product that reduces crude oil viscosity by applying a high intensity electrical field to crude oil while in transit. It serves upstream and midstream energy sectors. The company was formerly known as Save the World Air, Inc. and changed its name to QS Energy, Inc. in August 2015. QS Energy, Inc. was incorporated in 1998 and is based in Tomball, Texas.

urban-gro, Inc. engages in the designing, engineering, building, and integrating complex environmental equipment systems for indoor controlled environment agriculture (CEA) cultivation and retail facilities in the United States, Canada, and Europe. The company provides architectural design, engineering, and construction services comprising pre-construction, architectural and interior design, integrated cultivation design, owner's representative/construction management, and general contracting services; and maintenance, training, and support services. It also offers facility and equipment commissioning services; gro-care crop and asset protection services, including training services, equipment maintenance services, asset protection program, and an interactive online operating support system for gro-care and client document delivery and project management; and property condition assessment services. In addition, the company provides integrated equipment systems solutions, such as design, source, and integration of complex environmental equipment systems comprising heating, ventilation, and air conditioning solutions, as well as environmental control, fertigation, irrigation distribution, water treatment, and wastewater reclamation systems; and commercial horticulture lighting solutions, rolling and automated container benching systems, specialty fans, microbial mitigation, and odor reduction systems. It primarily markets and sells its solutions to clients in the CEA that includes operators and facilitators in the cannabis and produce markets; and commercial sectors comprising food and beverage consumer packaged goods companies, healthcare, higher education, and hospitality. urban-gro, Inc. was founded in 2014 and is based in Lafayette, Colorado.