China National Petroleum Corporation (CNPC) is an integrated international energy company. Based in China, we have oil and gas assets and interests in over 30 countries in Africa, Central Asia-Russia, South America, the Middle East and the Asia-Pacific. CNPC is China's largest oil and gas producer and supplier, as well as one of the world's major oilfield service providers and a globally reputed contractor in engineering construction, with businesses covering petroleum exploration & production, natural gas & pipelines, refining & marketing, oilfield services, engineering construction, petroleum equipment manufacturing and new energy development, as well as capital management, finance and insurance services. - Crude output: 110.33 million tons per year - Natural gas output: 79.86 billion cubic meters per year - Crude oil production: 53% of China's total - Natural gas production: 74% of China's total - Crude runs: 147.16 million tons per year - Domestic service stations: 19,840 - Domestic pipelines: 66,801 kilometers, including 16,369 kilometers for crude oil (nearly 67% of China's total), 40,995 kilometers for natural gas (77% of China's total) and 9,437 kilometers for refined products ( 48% of China's total) - Providing oilfield services and engineering construction in 63 countries around the world.

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.

Zigong Liyuan Technology Co., Ltd., established on 2006-03-30, Business scope includes new energy equipment and electromechanical equipment,Research on instruments and accessories,Production,Installation sales and technical services,high pressure vessel(High pressure storage wells only)manufacturing,Sales and Service.(The above scope should be licensed and the project shall not be produced and operated before the license is obtained.)(Items subject to approval by law,Business activities can only be carried out after approval by relevant departments)

Chengdu Dingsheng Technology Co., Ltd., established on 2000-11-20, Business scope includes licensed projects:Gas operation;Hazardous Chemicals Management;Special equipment manufacturing[Branch operation](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)General project:Oil and Gas Technical Services;Technical Services,technology development,technical consulting,Technology Exchange,technology transfer,Technology Promotion;software development;General equipment manufacturing(Does not include special equipment manufacturing)[Branch operation];Manufacture of special equipment for environmental protection[Branch operation];Internet equipment manufacturing[Branch operation];Mechanical and electrical equipment manufacturing[Branch operation];Gas Compression Machinery Sales;Sales of special equipment for oil drilling;Sales of power electronic components;software sales;Sales of station-use hydrogen refueling and hydrogen storage facilities;Sales of new energy original moving equipment;Daily necessities sales;Instrument sales;Information system integration service;Information Technology Consulting Services;Conference and Exhibition Services(Except for projects subject to approval by law,Carry out business activities independently in accordance with the law with a business license).

China National Petroleum Corp. Drilling Research Institute (doing business as CNPC Drilling Research Institute) is a company headquartered in China ultimately controlled by the Government of China that produces, drills and supplies oil and gas products.

Zigong Huaqi Technology Co., Ltd., established on 2000-04-27, Business scope includes manufacturing of pressure vessels(Underground high pressure gas storage wells only);Gas station equipment manufacturing,Sales,Install;Petrochemical engineering construction;Design of Shallow Oil and Gas Engineering,consultation service;Gas supply technical service;Gas storage well modification,repair,Related supporting products machining;Mechanical product sales;Drilling and Technical Services;Mechanical and electrical equipment installation;Mechanical and electrical engineering construction;Natural gas distributed energy combined cooling, heating and power,Operations Management,Cold energy recycling;Liquefied natural gas equipment manufacturing,Sales,lease;Town gas pipeline installation;Construction of fire protection facilities;Power engineering construction;Municipal public works construction;Anti-corrosion and thermal insulation engineering construction.(Items subject to approval by law,Business activities can only be carried out after approval by relevant departments)

Manufactures oil and gas field machinery and equipment

Sichuan Petroleum & Natural Gas Science & Technology Corp. is a private company headquartered in Zigong, China, specializing in natural gas transmission and distribution.

Korea Institute of Geoscience & Mineral Resources is a South Korean private company that provides geoscience research services.

CNPC Aobo (Chengdu) Technology Co., Ltd., established on 2018-12-29, The scope of business includes research and development of special instruments for geological exploration and seismic,manufacture,Sales and Leasing;Mineral Geological Exploration;Technical extension services;IoT Information Sensing Technology Services;Engineering and Technology Research and Experimental Development;earthquake service;Downhole operation,Logging;Engineering survey and design;data processing;Basic software service;Application software service;Machinery and Equipment Leasing;General parts manufacturing and mechanical repair;Manufacture of special equipment for oil drilling;Electronic device manufacturing;Communication system equipment manufacturing(Excluding wireless broadcasting and television transmitting and satellite ground receiving equipment);Optical Instrument Manufacturing;Manufacturing of electronic measuring instruments;Manufacturing of special instruments and meters for environmental monitoring;Industrial automatic control system device manufacturing;Petrochemical Engineering.(The above does not include licensed business items)(Those involved in qualifications operate with qualification certificates)(The above-mentioned industrial industries are limited to branches operating in industrial parks)(Items subject to approval by law,Business activities can only be carried out after approval by relevant departments).

Sinopec Zhongyuan Petroleum Engineering Design Co., Ltd., established on 1993-05-07, Business scope includes survey and design;Town Planning and Design;engineering design;consultation service;Engineering Supervision;EPC;New product development and application;Exploration Design Study;Equipment,electric,Environmental protection design and sales of anti-corrosion products;Contracting and its strength,scale,Foreign engineering projects that are compatible with performance;Import and export;Technology Import and Export;Acting for the import and export of goods;construction work,oil,chemical engineering,Supervision of municipal public works;Engineering bidding agency;Engineering cost consultation;Engineering Project Management;technical consulting,prepared by,Audit project;Project estimate,Budget,Supervision of final accounts;Instrumentation,computer software development;Socioeconomic Advisory Services;Geotechnical Design;construction contract;motor vehicle sales.

Gaz de France (GDF) was a French company which produced, transported and sold natural gas around the world, especially in France, its main market. The company was also particularly active in Belgium, the United Kingdom, Germany, and other European countries. Through its part-owned Belgian subsidiary SPE it was also involved in nuclear power generation. The company conducted a merger of equals with fellow utility company Suez on 22 July 2008 to form GDF Suez. Its head office was located in the 17th arrondissement of Paris.

Powerchina Huadong Engineering Corp. Ltd., a subsidiary of Power Construction Corporation of China, Ltd., is a company headquartered in Hangzhou, China, that provides industrial engineering services.

CNPC Exploration and Development Research Institute Langfang Branch, established on 2012-02-13, The scope of business includes the research and development of petroleum exploration and production technology.

Wacker GmbH is a German private company located in Berlin. The firm provides investment, property insurance and financing services. It was founded in 2016.

Part of VINCI SA, Untergrundspeicher- und Geotechnologie-Systeme GmbH is a company headquartered in Mittenwalde, Germany, that provides underground hydrocarbon storage. Robert Scheler is the current CEO of the firm. On December 01, 1999 Géostock SAS acquired Untergrundspeicher- und Geotechnologie-Systeme GmbH from TUI AG.\nThe company says this about itself: Our traditional engineering and service company specialises in underground storage technology – and its history can be traced back to the very beginning of this industry in Germany. Located in Mittenwalde, in front of the gates of Berlin, our company was privatised in 1991 and has become one of the market leaders in the industry today. Many years of experience in the project management, construction and operation of underground storage facilities, coupled with a wide variety of technical innovations has led to a swift assimilation of the new economic conditions.

Elpro GmbH is a growth-oriented, commercially and technologically independent group of companies. They plan, build and supply control and electrical systems for the sectors energy, natural gas, water, mining, cement and transportation. Decades of experience and their highly motivated staff have made them one of the leading medium-sized companies in their specialized markets. The company was founded in 1994 and is headquartered in Berlin, Germany.

Shaanxi Mingze Gas Engineering Co., Ltd., established on 2012-11-20, Business scope includes mechatronics,Research and development of energy technologies,consult,Serve,transfer;Chemicals(Precursor,monitor,Excluding hazardous chemicals),Instrumentation,Equipment,electrical equipment,Machinery Parts,hardware,Wholesale of electricity,retail;HVAC equipment,Automation control equipment,Manufacture of gas equipment,Sales,lease;Mechanical and Electrical Engineering Design,construction;Self-operated and agent import and export business of various commodities and technologies(Except for commodities and technologies that are restricted or prohibited by the state).(Items subject to approval by law,Business activities can only be carried out after approval by relevant departments)