Imet SpA engages in building band saws, circular saws and sawing machines. The company was founded in 1968 and is headquartered in Cisano Bergamasco, Italy.

Bontec, part of Waterland Management Holding IV BV, is a company headquartered in Belgium that engages in manufacturing, and supplying yarns, fabrics and fibres.

Environmental Dynamics International (EDI) specializes in the development and application of advanced technology aeration and biological treatment solutions for municipal and industrial wastewater. The professionals and engineers at EDI provide the highest level of value-added service, technology transfer, process application, and system design support. EDI is a full-service organization and provides field contract services for equipment installation, start-up, and maintenance with demonstrated success in more than 7,000 installations in over 100 countries worldwide.

Better Environmental Technology (Yantai) Co., Ltd., established on 2005-01-25, Business scope includes research and development,Manufacture of electrolytic ozone water machine,Hydrogen water machine,hydrogen water cup,Electrolytic ozone generator,hydrogen generator,Water quality processor, high oxygen water machine and other environmental protection equipment;production juice machine,Juicer,food processor,oven,Air cleaners and related parts,And sell the company's self-produced products listed above;Import and export of goods and technology.(Items subject to approval by law,Business activities can only be carried out after approval by relevant departments)

Yikang Technology Co., Ltd. was established in June 2009. It is a holding subsidiary of Konka Group (Shen Konka A: 000016), a listed company under OCT Group. It is the group's only environmental protection and water affairs professional platform company and a national "high-tech enterprise". Since 2014, through the expansion of different types of projects such as EPC, PPP and water affairs integration, the company has quickly established a full-process service model and operational capabilities for environmental protection and water affairs, successfully transformed the environmental protection and water affairs industries, and became a rising star in the environmental water affairs market. Operating income has jumped year after year. In 2017, the company continued to strengthen its service, operation and asset management capabilities through technological progress and model innovation, and comprehensively developed strategic emerging industries for energy conservation and environmental protection.

Guangzhou Enengke Technology Co., Ltd., established on 2018-12-05, Business scope includes engineering and technology research and experimental development;Engineering Management Services;Technical Services,technology development,technical consulting,Technology Exchange,technology transfer,Technology Promotion;water pollution control;Sewage Treatment and Its Reuse;Seawater desalination;Water Environment Pollution Prevention and Control Services;Environmental protection special equipment sales;Machinery sales;Machinery and Equipment Leasing;Environmental Consulting Services;Technology related to agricultural production and operation,information,Facilities construction and operation services;Foreign contracted projects;Undertake the engineering construction business of the head office;Network technology service;Engage in investment activities with own funds;hydroelectric power;Various construction activities;General contracting of housing construction and municipal infrastructure projects;Import and export;Technology Import and Export

Yidu Qiaohe Food Co., Ltd., established on 2013-04-11, Business scope includes flour and soybean products processing,Sales;Agricultural sales(Involved in licensing projects,It should be operated after obtaining the permission of the relevant department)**

Zhangzhou Longwenwick Information Technology Co., Ltd., established on 2018-05-14, Business scope includes application software development;Information Technology Consulting Services;Cloud platform service;Introduce new technology,New varieties,Carry out technical exchange and consulting services;Technology Transfer Consulting Services(ex-equity transaction,Title Broker);Agriculture, forestry, animal husbandry and fishery technology extension services;Other unlisted new energy technology promotion services;Environmental protection technology promotion service;3D printing technology promotion service;Intellectual Property Services(Including patent agent);computer,Retailing of Software and Ancillary Equipment.(Items subject to approval by law,Business activities can only be carried out after approval by relevant departments)

Beijing SDL Technology Co., Ltd. engages in the provision of smart environmental protection services. Its business activities include environmental monitoring, ecological environment big data, pollution control and energy conservation, comprehensive environmental services, industrial process analysis, and greenhouse monitoring equipment and systems. Its Environmental Monitoring business offers gaseous pollutant monitoring system, carbon dioxide monitoring system, and greenhouse gas monitoring system. Its Ecological Environment Big Data business provides pollution source comprehensive supervision software platform, carbon emission comprehensive analysis platform, and air pollution prevention and control decision-making support platform. Its Pollution Control and Energy Conservation business covers industrial water treatment, water saving and resource utilization of waste water, and resource utilization of industrial waste. Its Comprehensive Environmental Services business encompasses operation and maintenance services, third party testing services, and environmental consulting services. Its Industrial Process Analysis business offers process gas analysis solutions for natural gas, semiconductor, and heat treatment industries. Its Greenhouse Monitoring Equipment and Systems business provides pollution source carbon emission monitoring, atmospheric environment greenhouse gas monitoring, intelligent carbon emission measurement system, and carbon account management platform. The company was founded on September 24, 2001 and is headquartered in Beijing, China.

China Shipbuilding Industry Corp. No. 725 Research Institute is a company headquartered in China ultimately controlled by the Government of China that operates as an investment holding company.

Beijing Jingrun Environmental Protection Technology Co., Ltd., established on 1994-12-26, Business scope includes technology development,technical consulting,Technical Services,technology transfer;Sales Wujinjiaodian,Chemical Products(Does not contain dangerous chemicals and a class of precursor chemicals;),Equipment,electrical equipment,Instrumentation,Computer hardware and software,Green facilities,building materials(Does not contain sand and gravel and its sand and gravel products);Technology Import and Export;Import and export;Professional contractors;product design;Commissioned processing;Manufacture of special equipment for environmental protection;Sewage Treatment and Its Reuse.(Market entities independently choose business projects in accordance with the law,Carry out business activities;Items subject to approval by law,Carry out business activities in accordance with the approved content after approval by relevant departments;Do not engage in the business activities of projects prohibited and restricted by the industrial policies of the state and this city.)

Shenzhen Water Planning & Design Institute Co., Ltd. engages in the provision of technical services such as survey & design, planning consultation, project operation and management for water construction projects and supporting projects. Its products and services cover survey, design and planning services in the water conservancy industry and municipal water supply and drainage professional fields. The company was founded in 1985 and is headquartered in Shenzhen, China.

State Grid Ningxia Electric Power Co., Ltd. Electric Power Research Institute, established on 2003-12-22, Business scope includes licensed projects:Inspection and testing service(Items subject to approval by law,Business activities can only be carried out after approval by relevant departments)General project:Power Technical Supervision,Power technology development,Electricity education and training,Power technology service,Equipment Leasing,car rental,Realtor(Except for licensed business,Can independently operate projects that are not prohibited or restricted by laws and regulations)

Taizhou Lvye Environmental Protection Engineering Co., Ltd., established on 2004-08-24, Business scope includes process design of environmental protection facilities,put up,Install,debugging,Environmental Technology Consulting Services,Operations Management.(With qualification certificate).

Beijing Drainage Group Co., Ltd. engages in the provision of waste collection and water treatment services. The firm offers sewage treatment, sewage (rain) water network, recycled water supply, and equipment supplies. Its business activities also include investment management, waterworks construction, operations services, design consulting, and skills training services. The company was founded in 1973 and is headquartered in Beijing, China.

Heilongjiang Eastern Water Saving Technology Group Co., Ltd., established on 2012-06-28, The business scope includes sprinkler irrigation and micro irrigation equipment,drip irrigation equipment,twist(roll)Pan sprinkler,Mobile sprinkler equipment,Center pivot and large sprinkler irrigation equipment,Water and fertilizer integration equipment,drone,Plant protection equipment,Manufacture, sales and research and development of garden machinery and equipment;Fertilizer,Fertilizer tank,filter,drip tape,drip irrigation pipe,Plastic coated hose,Aluminum alloy pipes and fittings,Hose and accessories,Plastic pipes and fittings,PEandPVCManufacture, sales and research and development of pipes and fittings;water pump,motor,Mobile pump truck(stand),Electrical Equipment,Water supply and drainage equipment,Water treatment and purification equipment,Disinfection equipment,No negative pressure water supply equipment,Green facilities,Energy saving equipment,Generator set equipment,Solar Power Equipment,Sunshine Greenhouse Facilities,Power transmission and distribution and electric control equipment,transformer,Frequency conversion equipment,automation equipment,Fire Equipment,Water metering equipment,Water Level Measuring Equipment,Water conservancy information equipment manufacturing,Sales,R&D and Engineering Design,construction;Water conservancy system integration,to run,maintain;Water and rain moisture telemetry equipment,Groundwater Monitoring Equipment,Water environment automatic detection equipment,Water supply telemetry equipment,Network Communication Products,Production of software, hardware and hydrological monitoring instruments,Sales and R&D;Industrial Automation Hardware,software technology development,transfer,to promote,Sales and Consulting Services;Wire and Cable,Instrumentation,Hardware and electrical materials,Labor insurance and sales of standard and non-standard parts;Design of Water Saving Irrigation Project,Construction and Technical Consulting Services;Construction of water conservancy and hydropower projects;Municipal engineering construction;water treatment equipment,drip irrigation equipment,Sprinkler irrigation equipment,large equipment,Installation services of mechanical and electrical equipment and other equipment and pipelines;Electricity sales business.

Sichuan Tianhui Energy Technology Co., Ltd., established on 2010-10-13, Business scope includes general items:Resource recycling technology research and development;Technical Services,technology development,technical consulting,Technology Exchange,technology transfer,Technology Promotion;Research and development of waste heat, pressure and gas utilization technology;Research and development of technology for the harmless utilization of agricultural and forestry waste resources;Resource recycling service technical consultation;Mechanical equipment research and development;Agricultural non-point source and heavy metal pollution prevention and control technical services;Engineering and Technology Research and Experimental Development;Environmental protection special equipment sales(Except for projects subject to approval by law,Carry out business activities independently in accordance with the law with a business license).

Panjin Liaohe Oilfield Hualian Industrial Group Co., Ltd., established on 1998-10-29, Business scope includes licensed projects:Various construction activities,road freight transport(Does not contain dangerous goods),road freight transport(Contains dangerous goods),Lightning protection device detection,Power facility installation,undertook,Take the test,Installation, modification and repair of special equipment,Highway Management and Maintenance,Mapping service,General Aviation Services,Road Passenger Transport Operations,Gas Burning Appliance Installation,repair,Drinking water made and sold now,Quality inspection of construction projects,Port cargo handling activities,Catering Services(Items subject to approval by law,Business activities can only be carried out after approval by relevant departments,Specific business projects are subject to approval results) General project:software development,Metal surface treatment and heat treatment,Chemical product production(No licensed chemical products),paint manufacturing(Free of Hazardous Chemicals),Clothing and apparel retail,Sales of special labor protection products,Production of labor protection products,Technical Services,technology development,technical consulting,Technology Exchange,technology transfer,Technology Promotion,Labor service(Does not include labor dispatch),Security technology prevention system design and construction services,Landscaping engineering construction,Computer and Office Equipment Repair,Instrument Repair,Household Appliances Repair,Special Equipment Repair,electrical equipment repair,General Equipment Repair,General equipment manufacturing(Does not include special equipment manufacturing),Manufacturing of special equipment(Manufacture of licensed professional equipment not included),General parts manufacturing,Mechanical Parts,Parts processing,Manufacturing of electronic components,Manufacture of special equipment for oil drilling,Motor Vehicle Repair and Maintenance,Environmental Consulting Services,Security Consulting Services,Business Management Consulting,Sewage Treatment and Its Reuse,Cement Products Manufacturing,Manufacturing of plastic products,Professional cleaning,to clean,Disinfection service,Non-residential real estate leases,housing lease,Car rental,Machinery and Equipment Leasing,Daily miscellaneous goods sales,property management,Housekeeping,Manufacture of power distribution switch control equipment,Intelligent Instrument Manufacturing,Mechanical and electrical equipment manufacturing,General machinery and equipment installation services,IoT application service,Information system operation and maintenance services,Solid Waste Treatment,Soil Environmental Pollution Prevention and Control Services,car wash service,Camera and Video Production Services,Auto Parts Retail,Insulation Material Sales,Sales of building materials,Machinery sales,Mechanical Parts,Parts sales,Home Appliance Sales,Hardware retail,Valve and Cock Sales,Metal Material Sales,sales agent,motor manufacturing,Manufacturing of rubber products,Production of fireproof sealing materials,metal tool making,Motor and its control system research and development,flower planting,grain planting,production of agricultural products,Sales,processing,transportation,Storage and other related services,Communication equipment repair,Maintenance of transportation facilities,Internet of Things Technology Services,Metering service,electronic,Mechanical equipment maintenance(No special equipment),Motor Vehicle Modification Services,Earthwork construction,Chemical product sales(No licensed chemical products),Sales of labor protection products,Instrument sales,paint sales(Free of Hazardous Chemicals),Specialty Chemicals Sales(Free of Hazardous Chemicals),Loading and unloading,Office Supplies Sales,Sales of office equipment consumables,Electronic Components Retail,Land Consolidation Services,Ecological Restoration and Ecological Protection Services,Recycling of renewable resources(Removal of productive scrap metal),Productive Scrap Metal Recycling(Except for projects subject to approval by law,Carry out business activities independently in accordance with the law with a business license)

Saur SAS engages in waste management, infrastructure project, power generation, and public works. It offers full outsourcing of services, contract management, design, construction, and operations of water treatment plants and related infrastructure. The company was founded by Pierre Crussard in1933 and is headquartered in Issy-les-Moulineaux, France.