Veolia Water Solutions & Technologies Support SAS engages in water plants construction. The company was founded on December 21, 2000 and is headquartered in Saint Maurice, France.

Omnium de Traitement et de Valorisation, part of Veolia Environnement SA, is a company headquartered in France. The firm provides engineering and technical studies.

China Petrochemical Corporation (Sinopec Group) is a super-large petroleum and petrochemical enterprise group, established in July 1998 on the basis of the former China Petrochemical Corporation. Sinopec Group is a state-owned company solely invested by the state, functioning as a state-authorized investment organization in which the state holds the controlling share. Headquartered in Beijing, Sinopec Group has a registered capital of RMB 231.6 billion. The board chairman of Sinopec Group is its legal representative. Sinopec Group executes the investor rights over related state assets owned by its full subsidiaries, controlled companies and share-holding companies. These rights include receiving returns on assets, making major decisions and appointing management teams. The Group operates, manages and supervises state assets according to related laws, and shoulders the corresponding responsibility of maintaining and increasing the value of state assets. China Petroleum and Chemical Company (Sinopec Corp.), controlled by Sinopec Group, issued H-shares and A-shares at overseas and home respectively in October 2000 and August 2001 and was listed on stock markets in Hong Kong, New York, London and Shanghai. Sinopec Group’s key business activities include: industrial investment and investment management; the exploration, production, storage and transportation (including pipeline transportation), marketing and comprehensive utilization of oil and natural gas; the production, marketing, storage and transportation of coal; oil refining; the storage, transportation ,wholesale and retail of oil products; the production, marketing, storage, transportation of petrochemicals, natural gas chemicals, coal chemicals and other chemical products; the exploration, design, consulting, construction and installation of petroleum and petrochemical engineering projects; the overhaul and maintenance of petroleum and petrochemical equipments; the research and development, manufacturing and marketing of electrical and mechanical equipments; the production and marketing of electricity, steam, water and industrial gas; the research, development, application and consulting services of technology, e-business, information and alternative energy products; the import and export of self-support and agent commodity and technology; foreign project contracting, invite bidding, labor export; the international storage and logistics business. Sinopec Group ranked the 3rd in the Fortune Global 500 in 2014.

Anhui Huaqi Environmental Protection & Technology Co. Ltd. engages in the provision of water environment governance service. It focuses on the development and application of technology of biological aerated filter (BAF), and other series of processes. It provides BAF process technology and products, intelligent sewage treatment equipment, water environment treatment engineering services, and sewage treatment investment and operation services. It also offers village and town, black and smelly water, and medical wastewater treatments. The company was founded on April 27, 2002 and is headquartered in Ma'anshan, China.

Evoqua Water Technologies LLC provides water treatment solutions. Its water and wastewater treatment products include activated carbon, anaerobic digestion, biosolids treatment, disinfection, filtration, odor and corrosion control, physical chemical treatment, aeration and mixing, and electrochemical products. It also offers electrocatalytic, intake equipment, filter press equipment, and media exchange services. The company is headquartered in Warrendale, PA.

Fuji Clean Co., Ltd. is a private company headquartered in Japan involved in service industry machinery.

Centre de Recherche Industrielle du Quebec specializes in the areas of manufacturing technologies, the environment and industrial information. The firm serves to aerospace agri-food, composite and plastic materials, energy, information and communications technologies (ICT), metal production and mining industries. The company is headquartered in Quebec, Canada.

Kurita Water Industries Ltd. (栗田工業株式会社 Kurita Kōgyō Kabushiki-gaisha) is a Japanese manufacturer, providing water treatment chemicals and facilities as well as process treatment chemicals. During the 50´s Kurita Water Industries expanded the portfolio and started with the water treatment facilities business, chemical cleaning business (Kurita Engineering Co., Ltd.) and maintenance services. In her second decade, the 60´s, Kurita Water Industries entered the process treatment market, especially in the pulp and paper, petrochemical and steel industries. Since the mid of the 70´s up to now, Kurita Water Industries established 14 overseas subsidiaries and affiliates. Since 2003 Kurita Water Industries is listed in the Nature Stock Index (NAI = Natur-Aktien-Index).

Anhui Lvheng Environmental Protection Technology Co., Ltd., established on 2018-11-23, Business scope includes technology development in the field of environmental technology,technical consulting,Technical Services;Municipal engineering construction and management;sewage treatment,Technology research and development related to air pollution control,Technical Services;Mechanical and electrical equipment maintenance;Environmental quality inspection,Electrical automation equipment,Manufacture of machinery and equipment,Sales,repair;environmental protection material,Chemical raw materials(Hazardous chemicals excluded),Sales of instrumentation.(Items subject to approval by law,Business activities can only be carried out after approval by relevant departments)

Cumminscorp Ltd. manufactures water tank and aquaculture systems. The firm products are used for aquaculture, waste water recycling, water remediation and regeneration. The company was founded by Ian Geoffrey Cummins in 2003 and is headquartered in Gaven, Australia.

OTTO Luft- und Klimatechnik GmbH & Co. KG specializes in air conditioning, refrigeration, and building automation. The firm offers facility systems solutions in the areas of comfort air, clean systems, industrial air, and building intelligence. It also provides facility services, energy consult, and qualification services. The company was founded by Hartmut Otto Sr. in 1967 and is headquartered in Bad Berleburg, Germany.

Hitachi Chemical co., ltd. is a chemical manufacturer engaged in a wide range of areas, including semiconductor and display-related materials, printed wiring boards, copper clad laminates, photosensitive dry films, functional polymeric materials, adhesive films, carbon products, ceramics and automotive related products. Hitachi Chemical co., ltd. is a manufacturer of semiconductor- and display-related materials, printed wiring boards, copper clad laminates, photosensitive dry films, functional polymeric materials, adhesive films, carbon products, ceramics and automotive related products.

BKT Co., Ltd. is a holding company, which provides environmental engineering services and solutions. Its business areas are Water Business, Membrane Business, Energy Business, and Agriculture Business. The firm offers public sewage treatment, animal manure disposal, wastewater treatment, membrane filtration system, energy reduction, production, and recovery, and certification of eco-friendly agricultural products. The company was founded by Doo Tae Kim on March 15, 1995 and is headquartered in Daejeon, South Korea.

He County Yimai Carbon Industry Co., Ltd., established on 2008-08-05, The business scope includes mechanism charcoal and its products,Manufacture and sales of production equipment;Production of biological filter filler and its production equipment,manufacture,Sales;Complete sets of mechanical and electrical equipment,Install,Maintenance and its technical services and production of related parts,manufacture,Sales;Acquisition of wood and bamboo and production of its products and production equipment,manufacture,Sales;Self-operated and agent technology import and export business of various commodities(Except for commodities and technologies that the state restricts enterprises to operate or prohibits import and export);General cargo road transport.(Items subject to approval by law,Business activities can only be carried out after approval by relevant departments)

Jiangxi Gaia Environmental Protection Technology Co., Ltd., established on 2015-08-14, Business scope includes licensed projects:Construction engineering design,Various construction activities,General contracting of housing construction and municipal infrastructure projects,Construction Engineering Survey,Urban domestic waste operating services,Hazardous Waste Management,road freight transport(Contains dangerous goods),Construction labor subcontracting(Items subject to approval by law,Business activities can only be carried out after approval by relevant departments) General project:Engineering and Technology Research and Experimental Development,Technical Services,technology development,technical consulting,Technology Exchange,technology transfer,Technology Promotion,Fermentation process optimization technology research and development,Environmental Consulting Services,Solid Waste Treatment,Ecological Restoration and Ecological Protection Services,Water Environment Pollution Prevention and Control Services,Atmospheric Environmental Pollution Prevention and Control Services,Soil Environmental Pollution Prevention and Control Services,Agricultural non-point source and heavy metal pollution prevention and control technical services,Sewage Treatment and Its Reuse,Manufacture of special equipment for environmental protection,Domestic waste treatment equipment sales,Soil and site restoration equipment manufacturing,Environmental emergency technical equipment manufacturing,Manufacturing of sludge treatment equipment,Eco-environmental material sales,Sales of new membrane materials,Specialty Chemicals Sales(Free of Hazardous Chemicals),stone processing for construction,Sales of building materials,Manufacturing of lightweight building materials,Landscaping engineering construction,Machinery and Equipment Leasing,Labor service(Does not include labor dispatch)(Except for licensed business,Can independently operate projects that are not prohibited or restricted by laws and regulations)

Ebara Corp. engages in the manufacture and sale of industrial machineries. It operates through the following segments: Fluid Machinery and Systems, Environmental Plants, Precision Machinery, and Others. The Fluid Machinery and Systems segment deals with the manufacture, sale, and maintenance of pumps, compressors, turbines, cooling machines, and blowers. The Environmental Plants segment handles engineering, construction, operation, and maintenance of municipal and industrial waste incineration plants and water treatment plants. The Precision Machinery segment manufactures and sells vacuum pumps, plating systems, and exhaust gas treatment equipment. The Others segment includes business support services. The company was founded by Issey Hatakeyama in November 1912 and is headquartered in Tokyo, Japan.