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ClearSign Technologies Corporation designs and develops technologies to enhance operational performance, energy efficiency, emission reduction, safety, and overall cost-effectiveness of industrial and commercial systems in the United States and the People's Republic of China. Its ClearSign Core Burner Technology consists of an industrial burner body and a downstream porous ceramic structure or metal flame stabilizing device; ClearSign Core Plug & Play Burner technology provides direct burner replacement for traditional refinery process heaters; and ClearSign Eye Flame Sensor, an electrical flame sensor for industrial applications. The company also provides ClearSign Core Boiler Burner; and ClearSign Core Flaring Burners technologies. It serves energy, institutional, commercial and industrial boiler, chemical, and petrochemical industries. The company was formerly known as ClearSign Combustion Corporation and changed its name ClearSign Technologies Corporation in November 2019. ClearSign Technologies Corporation was incorporated in 2008 and is headquartered in Tulsa, Oklahoma.

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.

Fusion Fuel Green PLC focuses on the production of hydrogen in Portugal, Spain, and Morocco. The company intends to provide hydrogen generators to clients that operate their green hydrogen plants. It serves natural gas networks and grids, ammonia producers, oil refineries, regulators, and related government departments. The company was founded in 2018 and is based in Dublin, Ireland.

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.