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.

Sinopec Beijing Research Institute of Chemical Industry engages in the research in petrochemical industry. Its core products include Select hydrogenation and cryogenic methanation catalyst and process, Polyolefin catalyst, Napro® Additives, and Ethylene oxide silver catalyst. It also involves in technical services, technical consulting, technical training, and technical support. The company was founded in June 1958 and is headquartered in Beijing, China.

RCEES is a Chinese research institute that focuses on eco-environmental science and technology.

Poten Environment Group Co., Ltd. engages in the provision of integrated solutions for pollution control. Its business activities include water treatment, management of water resources, development of ecological restoration technology, undertaking of water and environmental projects in engineering design, core equipment manufacturing, development and sale of environmental related products, investment & operation of covering industry and urban water, ecological restoration, energy & equipment and asset management. The company was founded on January 18, 1995 and is headquartered in Beijing, China.

Shandong Long Antai Environmental Protection Technology Co., Ltd., established on 2005-10-18, Business scope includes research and development,Production,Sales of environmental protection and energy saving equipment,Environmental detection and monitoring equipment,Environmental treatment equipment,Instrumentation,Various water treatment fillers,filter material,Material;Environmental detection and monitoring,Electric control,automated system,information management system,Software and hardware research and development of communication transmission system,Production,Sales;R&D and consulting of environmental protection technology;waste water,exhaust gas,Solid waste purification treatment project operation;Environmental detection monitoring and data acquisition and transmission system operation and maintenance;Design and Construction of Environmental Engineering;Construction Mechanical and Electrical Engineering,Installation and construction of environmental protection equipment and facilities;Import and export,Technology Import and Export(Items subject to approval by law,Business activities can only be carried out after approval by relevant departments).

China Metallurgical CCID Technology Research Center Co., Ltd., established on 2009-06-15, Business scope includes general items:High-tech research and development,technology transfer,technical consulting,Technical Services,Electronics and Information Technology Products,New energy and high-efficiency energy-saving technology products,Environmental Protection Technology Products,Development of new products in metallurgical technology,Production,Sales,Install,debugging(Except for projects subject to approval by law,Carry out business activities independently in accordance with the law with a business license)

Suzhou Kehuan Environmental Protection Technology Co., Ltd. engages in the provision of engineering services. Its business scope includes design of environmental governance projects; construction and operation management of municipal engineering and environmental protection projects; development, sale, installation, and commissioning of environmental pollution prevention equipment, glass steel products, and plastic industrial parts; technical development and consulting services for environmental pollution prevention equipment; and import and export of goods and technology. The company was founded on July 28, 2009 and is headquartered in Suzhou, China.

Part of Goldwind Science & Technology Co., Ltd., Goldwind Environmental Protection Co., Ltd. (doing business as Jingfeng Environmental Protection Co Ltd) is a Chinese company located in Beijing that engages in air, water and solid waste management. The firm was founded in 2015. Zhi Ping Xiao is currently the CEO of the company.

PetroChina Co. Ltd. engages in the petroleum related products, services and activities. It operates through the following business segments: Exploration and Production; Refining and Chemicals; Marketing; Natural Gas and Pipeline; and Head Office and Other. The Exploration and Production segment involves exploration, development, production, and marketing of crude oil and natural gas. The Refining and Chemicals segment focuses on the refining of crude oil and petroleum products, production and marketing of primary petrochemical products, derivative petrochemical products, and other chemical products. The Marketing segment includes marketing of refined products and the trading business. The Natural Gas and Pipeline segment comprises transmission of natural gas, crude oil, and refined products and the sale of natural gas. The Head Office and Other segment relates to cash management and financing activities, the corporate center, research and development, and other business services supporting the operating business segments of the Group. The company was founded on November 5, 1999 and is headquartered in Beijing, China.

Beijing Sound Environmental Engineering Co. Ltd. engages in the provision of sewage treatment services. Its business activities include research and development of water treatment technology, technical advisory services, general contracting, environmental engineering and engineering consulting services. The company was founded on November 30, 1999 and is headquartered in Beijing, China.

CNOOC Tianjin Chemical Research and Design Institute Co., Ltd., established on 2000-12-08, The scope of business includes technology in the chemical industry,product,equipment,information research,to develop,production and business;And provide engineering design related to the above,EPC,project consultancy,Architectural Design and Environmental Engineering Impact Assessment,consult;Technology development related to the above scope,consult,transfer,Serve;Sales of products developed and produced by the unit,Chemical raw materials(Hazardous Chemicals Involving Hazardous Chemicals[2019]001313No. Hazardous Chemical Business License shall prevail),Equipment,Sales of Wujinjiaodian and electronic products(except cars);rubber products;loading and unloading;Own house rental;advertising business;Chemical Information Consulting Service;Goods and technology import and export business;Safety Evaluation and Consulting Services;Explosion-proof electrical testing and inspection,Explosion-proof equipment technical service,technical consulting;Engineering supervision service;diesel antiwear agent(Hazardous chemicals and precursor drugs are excluded)Production(branch production),Sales;Development of environmentally friendly products and equipment,Production(branch production),Sales;Water Treatment Technology Development,consult,transfer,Serve;Environmental Engineering Design,technical consulting;water pollution control;Air Pollution Control;Solid waste management technology development;Soil Pollution Control and Restoration Services;Anti-corrosion insulation project;Safety production training(Educational and teaching activities that require a school-running license are not allowed);Standard development,Standard Implementation Consulting Services;Chemical product inspection and testing(Operate in accordance with the scope of the accreditation certificate);Solid Waste Treatment(It can only operate after obtaining the environmental impact assessment and approval from relevant departments).(The above business scope involves production,branch production only)(Items subject to approval by law,Business activities can only be carried out after approval by relevant departments)

Botian Industrial Technology (Beijing) Co., Ltd., established on 2014-11-02, Business scope includes general items:Technical Services,technology development,technical consulting,Technology Exchange,technology transfer,Technology Promotion;Sewage Treatment and Its Reuse;water pollution control;Solid Waste Treatment;Engineering Management Services;Foreign contracted projects;Import and export;Technology Import and Export;Import and export agency.(Except for projects subject to approval by law,Carry out business activities independently in accordance with the law with a business license)licensed items:Construction engineering design.(Items subject to approval by law,Business activities can only be carried out after approval by relevant departments,The specific business items are subject to the approval documents or licenses of relevant departments)(Do not engage in the business activities of projects prohibited and restricted by the industrial policies of the state and this city.)

Shanghai Nanotechnology and Application National Engineering Research Center Co., Ltd., established on 2004-08-20, Business scope includes research and development of nanotechnology and related technologies,Production and sales of nano-related products,Technology development in the nanosphere,technology transfer,technical consulting,Technical Services,Investment in projects and products,account Serive. [Items subject to approval by law,Business activities can only be carried out after approval by relevant departments]

Botian Environmental Technology (Tianjin) Co., Ltd., established on 2015-08-26, Business scope includes environmental protection new technology and product development,consult,transfer,Serve,manufacture,Sales;Green facilities,Environmental Pollution Testing Services;Goods and technology import and export business.(Items subject to approval by law,Business activities can only be carried out after approval by relevant departments)

Shanghai Zhongyao Environmental Protection Industry Co., Ltd., established on 2001-03-22, Business scope includes environmental engineering,Water treatment project,solid waste,sludge,River silt and waste gas treatment project,Environmental Restoration Engineering Design,Install,debugging,Design of Municipal Public Works,Install,debugging,Water conservancy and hydropower engineering design,Install,debugging,Environmental friendly,water treatment,solid waste,sludge,river silt,sanitation,Exhaust gas treatment,Technology development in the field of environmental remediation,technical consulting,Technical Services,technology transfer,Design and equipment installation of waste gas treatment engineering,Pipeline water purification project management,Operation and management of water treatment equipment and environmental protection facilities,Mechanical and electrical equipment installation,The following business scope is limited to branch operations:Production and processing of environmental protection and water treatment equipment,solid waste,sludge,River sludge and waste gas treatment equipment,Environmental Restoration Equipment,Sales of environmental protection and water treatment equipment,solid waste,sludge,River sludge and waste gas treatment equipment,Environmental Restoration Equipment,Water purification equipment. [Items subject to approval by law,Business activities can only be carried out after approval by relevant departments]

Suzhou Huibolong Environmental Technology Co., Ltd., established on 2014-07-02, Business scope includes sewage,Research and development of water supply treatment technology and equipment,Engineering design contracting and technical services;Engineering construction and installation services;Catalytic Oxidation Technology and Catalyst for Sewage Treatment(Non-hazardous chemical products)development and sales of;electronics,metallic material,Sales and engineering technical services of refractory insulation materials;Research and development of membrane bioreactor process technology and undertake corresponding projects;Self-operated and agent import and export business of various commodities and technologies(Except for commodities and technologies that the state restricts enterprises to operate or prohibits import and export).(Items subject to approval by law,Business activities can only be carried out after approval by relevant departments) General project:Machinery and Equipment Leasing(Except for projects subject to approval by law,Carry out business activities independently in accordance with the law with a business license)

CNOOC Energy Technology & Services Ltd. engages in provision of energy technology services, floating production storage and offloading (FPSO) production technology services, energy logistics services, safety, environmental protection and energy saving products and services. It operates through the following segments: energy technology services, FPSO production technology services, energy logistics services, safety, environmental protection, and energy saving. The Energy Technology Services segment provides equipment operation and maintenance, pipeline technology, engineering technology, and data information technical services. The FPSO Production Technology Service segment offers light boat services; ships and support personnel boat services; and comprehensive services such as FPSO construction, commissioning, management, towing, installation, and unloading services. The Energy Logistics Services segment focuses on providing logistics support for offshore oil and gas field exploitation through marine supplies and catering services, and assistance for oil and gas products distribution. The Safety, Environmental Protection and Energy Saving Services segment covers marine oil spill response services; industrial water treatment; human resources and training services; utilization of coatings and marine industrial protection, catalyst, and liquefied natural gas cold energy; and energy saving and environmental testing services. The company was founded on February 22, 2005 and is headquartered in Beijing, China.

Tianjin Fengyun Water Resources Technology Co., Ltd., established on 2006-09-19, Business scope includes environmental protection equipment,Environmental protection and energy saving technology,Membrane Technology Development,consult,Serve,transfer;Environmental Engineering Design,construction;Green facilities,Solid-liquid separation equipment installation;Wholesale and retail of environmental protection equipment.(Items subject to approval by law,Business activities can only be carried out after approval by relevant departments)