HUHUTECH International Group Inc. designs and implements integrated facility management systems and industrial automation monitoring systems in the People's Republic of China and Japan. The company offers high-purity gas and chemical conveyor systems; and factory management and control systems that monitors the facility production atmosphere, and consolidates sub-systems, including gas monitoring, chemical monitoring, high and low voltage power distribution, air pressure, air conditioning, water, access control system, elevator, sewage treatment, waste gas emission, pure water, and other systems. It primarily serves optoelectronics, semiconductor, telecom, and logistic industries. The company was founded in 2015 and is based in Wuxi, the People's Republic of China.

ReTo Eco-Solutions, Inc., together with its subsidiaries, manufactures and distributes construction materials. Its products include aggregates, bricks, pavers, and tiles. The company also provides ground works materials for water absorption, flood control, and water retention; landscape retaining materials for gardens, roads, bridges, city squares, retaining walls, and slope construction; hydraulic engineering materials for slope protection and river transformation; and wall materials for insulation, decoration, and building walls. In addition, it offers construction materials manufacturing equipment, such as automated production equipment with hydraulic integration in China, South Asia, North America, the Middle East, North Africa, and Southeast Asia; and undertakes municipal construction projects, including sponge city projects and ecological restoration projects. Further, the company provides roadside assistance services, including towing, jump start, tire change, automobile repair services, and other services; and designs, develops, and sells customized software solutions, such as logistics management system, retail management system, fleet management system, and vehicle rental management system. Additionally, it offers parts, engineering support, consulting, technical advice and service, and other project-related solutions for manufacturing equipment and environmental protection projects. ReTo Eco-Solutions, Inc. was founded in 1999 and is headquartered in Beijing, the People's Republic of China.

Tantech Holdings Ltd, together with its subsidiaries, develops and manufactures bamboo-based charcoal products for industrial energy, household cooking, heating, purification, agricultural, and cleaning applications in the People's Republic of China and internationally. The company operates through two segments: Consumer Products and Electric Vehicles. It provides pressed and formed charcoal briquettes for use in grills, incense burners, and other applications under the Algold brand. The company also offers Charcoal Doctor branded products, such as air purifiers and humidifiers, automotive accessories for air purification, underfloor humidity control products, pillows and mattresses, wardrobe deodorizers, mouse pads and wrist mats, refrigerator deodorants, charcoal toilet cleaner disks, liquid charcoal cleaners, shoe insoles, and decorative charcoal gifts. In addition, it provides bamboo vinegar, a liquid byproduct for use in disinfectants, detergents, lotions, specialized soaps, toilet cleaners, and fertilizers, as well as in various agricultural applications; and trades in charcoal products. Further, the company develops and sells electric buses, electric logistics cars, and specialty electric vehicles, such as brushless cleaning cars, electric cleaning cars, special emergency vehicles, and funeral cars; and solar cells, lithium-ion batteries, auto parts, and electric control systems. It is also involved in the biodegradable packaging and supply chain businesses, as well as provides commercial factoring services. The company was founded in 1998 and is headquartered in Lishui, the People's Republic of China.

Recon Technology, Ltd. provides hardware, software, and on-site services to companies in the petroleum mining and extraction industry in the People's Republic of China. The company offers equipment, tools, and other components and parts related to oilfield production and other energy industries; and develops and sells industrial automation control and information solutions. It is also involved in designing, testing, and implementing solutions for sewage, oily sludge treatment; and produces and sells integrated equipment and project services. In addition, the company develops, upgrades, and maintains online operation platform of gas stations, marketing, and promotion related services, as well as engages in production and efficiency of exploited oil wells business and plastic chemical cycle activities. Further, it provides equipment for oil and gas production and transportation, including heating furnaces, burner, waste water and oil treatment products and services, chemical recycling plan, automation system and service; and operates platform services comprising of intelligent marketing system and digitalization solution for gas stations. Additionally, the company offers equipment and accessories. Recon Technology, Ltd. was incorporated in 2007 and is headquartered in Beijing, the People's Republic of China.

Euro Tech Holdings Company Limited distributes water treatment equipment, laboratory instruments, analyzers, test kits and related supplies, and power generation equipment in Hong Kong and the People's Republic of China. It sells analytical instruments, such as spectrophotometers, colorimeters, turbidimeters, ion-selective electrodes, chemical oxygen demand and digestion apparati, and precision re-agent dispensing devices, as well as chromatographs, mass spectrometers, flow injector analyzers, automated sample preparation workstations, and atomic spectrometers. The company offers environmental monitoring instruments, such as air and water quality monitoring instruments; sample pre-treatment equipment; and general-purpose laboratory instruments consisting of water quality monitoring and analysis equipment. In addition, it distributes general testing and measuring equipment, including multi-channel digital and analogue recorders, signal amplifiers, and calibration equipment for energy conservation, renewable energy equipment, power quality analyzers, and continuous emissions monitoring systems to power plants, railway and aero-space industries, utilities, educational institutions, and telecommunications companies. Further, it offers process control systems, including sensors, temperature and pressure gauges, power and energy consumption meters, flow meters, valves, temperature and pressure transmitters, control devices, and calibrators, as well as waste-water treatment moisture, power, energy, and harmonic analyzers; systems engineering services; and maintenance, installation assistance, and calibration services. Additionally, it distributes programmable logic controllers, telemetry units, and supervisory control and data acquisition systems and software; and engages in water and waste-water treatment engineering and air pollution control business. The company was founded in 1971 and is headquartered in Hong Kong, Hong Kong.

JE Cleantech Holdings Limited, an investment holding company, designs, develops, manufactures, and sells cleaning systems for various industrial end-use applications in Singapore, Malaysia, and internationally. It provides various cleaning systems and other equipment, including aqueous washing systems, plating and cleaning systems, train cleaning systems, and filtration units, as well as equipment parts and components. The company also offers centralized dishwashing services for food and beverage establishments, such as food courts, hawker centers, restaurants, cookhouses, eldercare homes, and inflight catering service provider, as well as general cleaning services for food courts and hawker centers. In addition, it leases dishware washing equipment. The company was founded in 1999 and is headquartered in Singapore. JE Cleantech Holdings Limited is a subsidiary of JE Cleantech Global Limited.

Sentage Holdings Inc. provides a range of financial services in the People's Republic of China. The company offers consumer loan repayment and collection management, loan recommendation, and prepaid payment network services. It also provides consultancy and information technology support; and technology and system development and support services. Sentage Holdings Inc. was incorporated in 2019 and is headquartered in Shanghai, the People's Republic of China.

Taoping Inc. provides cloud-app technologies for smart city IoT platforms, digital advertising delivery, and other internet-based information distribution systems in China. The company provides cloud-based products, high-end data storage servers, and related services sold to private sectors including new media, healthcare, education and residential community management, and other industries and applications; and hardware and software solutions with proprietary software and content. It also engages in the wastewater treatment business and other AI-related product and solutions. In addition, the company operates Taoping Net, an advertising-resources trading service platform, which connect screen owners, advertisers, and consumers; and Taoping App that enable customers to distribute and manage ads from mobile terminals. The company was formerly known as China Information Technology, Inc. and changed its name to Taoping Inc. in June 2018. Taoping Inc. was founded in 1993 and is headquartered in Shenzhen, the People's Republic of China.