Halliburton Energy Services, Inc. provides oilfield services. It offers technical products and services for petroleum, natural gas exploration and production. The company is headquartered in Houston, TX.

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.

Baker Hughes, Inc. is a private company headquartered in Houston, TX. The firm manufactures oilfield equipment.

BGP, Inc. offers geophysical survey and other services. The main business of BGP includes onshore, offshore, TZ seismic data acquisition; seismic data processing and interpretation; reservoir geophysics; borehole seismic surveys and micro-seismic; geophysical research and software development; GME and geo-chemical surveys; geophysical equipment manufacturing and multi-client services. The company was founded in 2002 and is headquartered in Zhuozhou, China.

12th Research Institute of China Electronic Tech Group Corp. (doing business as China Electronic Technology Group Corporation No.12), a subsidiary of China Electronic Technology Group Corp., is a company headquartered in Beijing, China. The firm provides research services for electronic technology.

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.

Xian Research Inst of China Coal Tech & Eng Group Corp. is a company headquartered in Xian, China and ultimately controlled by the Government of China, that engages in geophysical surveying and other related operation.

Wuhan Changsheng Coal Safety Technology Co., Ltd., established on 2011-02-22, Business scope includes coal mines,Mine environmental safety inspection,Monitoring Technology Development,Transfer and Consulting Services,engineering exploration,detection,Monitoring Technology Development,transfer,consultation service;Instrumentation and software development,Production,Sales,Import and export trade of related equipment and software(Technology and goods prohibited by the state from import and export are excluded).(Projects with special national regulations shall be operated within the approved period after approval or with a license)

Schlumberger Technology BV, a subsidiary of Schlumberger NV, is a Dutch company located in The Hague. The firm provides gas and oil exploration services.

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

China Petroleum Logging Co. Ltd. is a company headquartered in Beijing, China and ultimately controlled by the Government of China, that provides wellbore technical services includes logging, cable completion logging, engineering logging, perforating, testing and related services.

Part of Schlumberger NV, Schlumberger Technologies, Inc. is a company headquartered in Moorestown, NJ, that provides oilfield services such as distributing oil and gas information technologies and providing consulting services.

GlobalWafers is a silicon wafer manufacturers in the world. Founded in 1981, it was the semiconductor business unit of SAS (Sino-American Silicon Product Inc.) and spun off as GlobalWafers Co., Ltd. in 2011. Specializing in 3” to 12” silicon wafer manufacturing, product applications extend through power management, automotive, IT and MEMS. GlobalWafers operates out of nine facilities in Taiwan, China, USA, Japan, Denmark, and Poland. GlobalWafers is listed on the Taipei Exchange.

Beijing Petroleum Machinery Co., Ltd., established on 1955-01-01, Business scope includes general items:Manufacture of special equipment for oil drilling;Sales of special equipment for oil drilling;Deep sea oil drilling equipment manufacturing;Deep sea oil drilling equipment sales;Oil and Gas Technical Services;Engineering technical service(planning management,survey,design,Except supervision);rental service(Licensed rental services not included);sales agent;Technical Services,technology development,technical consulting,Technology Exchange,technology transfer,Technology Promotion;Mechanical equipment research and development;Machinery sales;Machinery and Equipment Leasing;electrical equipment repair;Electrical Equipment Sales;Mechanical and electrical equipment manufacturing;Sales of mechanical and electrical equipment;Motor manufacturing;Motor and its control system research and development;Special Equipment Repair;Manufacturing of special equipment(Manufacture of licensed professional equipment not included);Domestic Freight Forwarding;General Cargo Warehousing Services(Does not contain hazardous chemicals and other items that require approval);electronics sales;Wholesale of computer software, hardware and auxiliary equipment;Retailing of computer software, hardware and auxiliary equipment;Industrial automatic control system device manufacturing;Industrial automatic control system device sales;Industrial Design Services;Refrigeration,Air Conditioning Equipment Manufacturing;Refrigeration,Air Conditioning Equipment Sales;Gas Compression Machinery Manufacturing;Gas Compression Machinery Sales;Instrument Manufacturing;Instrument sales;Instrument Repair;Hardware retail;Wholesale of hardware products;Manufacturing of metal chains and other metal products;Sales of metal chains and other metal products;Chemical product sales(No licensed chemical products);Non-residential real estate leases;Sales of new energy vehicles;Sales of electric accessories for new energy vehicles;Sales of new energy vehicle battery replacement facilities;Ocean Engineering Equipment Manufacturing;Ocean engineering equipment sales;Development of key supporting systems for marine engineering;Solid Waste Treatment;Research and development of online energy measurement technology;Manufacturing of Power Electronic Components;Sales of power electronic components;software development;gas,Liquid separation and purification equipment manufacturing;gas,Liquid separation and purification equipment sales;Pump and vacuum equipment manufacturing;Pump and vacuum equipment sales;Manufacture of spray guns and similar appliances;Sale of spray guns and similar appliances;Manufacture of plastic crates and containers;Sales of station-use hydrogen refueling and hydrogen storage facilities;car sales;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:road freight transport(Does not contain dangerous goods);Road Motor Vehicle Production;Special equipment manufacturing;Installation, modification and repair of special equipment.(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.)

Services Petroliers Schlumberger SA provides engineering services. The company was founded on September 30, 1954 and is headquartered in Paris, France.

Sinopec Geophysical Corp. is a private company headquartered in China that provides petroleum and technology services.

China Oilfield Services Ltd. is an investment holding company, which engages in the provision of offshore oilfield services. It operates through the following segments: Drilling Services, Well Services, Marine Support Services, and Geophysical Acquisition and Surveying Services. The Drilling Services segment provides oilfield drilling services. The Well Services segment includes the logging and downhole services, such as drilling fluids, directional drilling, cementing and well completion, and the sale of well chemical materials and well workovers. The Marine Support Services segment is composed of the transportation of materials, supplies and personnel to offshore facilities, moving and positioning drilling structures, the transportation of crude oil and refined products. The Geophysical and Surveying Services segment deals with offshore seismic data collection, marine surveying, and data processing services. The company was founded on February 15, 1982 and is headquartered in Langfang, China.