Landmark’s rich history of innovation began more than 30 years ago when the company’s founders changed exploration and production with the first interactive 3D seismic interpretation workstation. Landmark has continued to envision, invest in, evolve and advance our technologies. Milestone after milestone, the industry has hailed Landmark for its scientific leadership.​

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

Powerchina Chengdu Engineering Corp., Ltd. provides planning and consultancy, investigation and design, engineering and construction, as well as investment and financing services in clean energy, water, infrastructure, and other fields. The company was founded in 1950 and is headquartered in Chengdu, China.

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.

China Construction Fourth Engineering Division Corp. Ltd. (doing business as CSCEC 4th Bureau) is a Chinese company located in Guangzhou and ultimately controlled by the Government of China. The firm engages in infrastructure and real estate construction.

Shanghai Shunsheng Geological Survey Engineering Co., Ltd., established on 2018-10-31, The scope of business includes engaging in technology development in the field of geological survey technology,technical consulting,technology transfer;General machinery and equipment sales,repair. [Items subject to approval by law,Business activities can only be carried out after approval by relevant departments]

CCCC Second Highway Consultants Co., Ltd. is a Chinese company located in Wuhan and ultimately controlled by the Government of China that provides highway, bridge, municipal engineering survey, design, supervision, consulting services. The firm was founded in 1991. Peng Cheng Feng is the current CEO of the company.

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.

Powerchina Huadong Engineering Corp. Ltd. is a company headquartered in Hangzhou, China and ultimately controlled by the Government of China, that provides industrial engineering services.

Powerchina Guiyang Engineering Corp. Ltd. is a Chinese company located in Guiyang and ultimately controlled by the Government of China that provides hydraulic engineering services.

Saudi Arabian Oil Co. is engages in the production, transportation, and sale of energy and chemicals. It also offers prospecting, exploring, drilling, extracting, processing, manufacturing, refining and marketing hydrocarbon substances. The company operates through the following segments: Upstream, Downstream, and Corporate. The Upstream segment consists of exploring for, developing and producing crude oil, natural gas and natural gas liquids exploration, field development and production. The Downstream segment includes refining and petrochemical manufacturing, supply and trading, distribution and power generation, logistics, and marketing of crude oil and related services to international and domestic customers. The Corporate segment refers supporting services including human resources, finance and IT not allocated to Upstream and Downstream. Saudi Arabian Oil was founded on May 29, 1933 and is headquartered in Dhahran, Saudi Arabia.

Changjiang Survey, Planning, Design and Research Co., Ltd., established on 2008-04-01, Business scope includes licensed projects:Import and export;Technology Import and Export;Engineering cost consulting business;Foreign labor cooperation(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:survey of construction works,design,consult,EPC,Supervision and investment, etc.,include:Water Resources and Hydropower,electricity,New energy and water-related infrastructure,surroundings,architecture,Transportation,Municipal public,Survey of engineering in electronics and other industries,design,consult,EPC,Supervision and investment, etc.;and the required equipment,Material import and export;Engineering Safety Monitoring,Quality Inspection,Environmental testing and related technical services;Whole Process Engineering Consulting;Software and IT Services,Information system integration service;water ecology,Water Resources and Water Environment,Flood Control and Disaster Mitigation and Soil and Water Conservation,Watershed planning and governance development science and technology research;Engineering and Technology Research and Experimental Development;Engineering Management 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 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.

Chongqing Nanjiang Engineering Survey and Design Group Co., Ltd., established on 1991-09-19, Business scope includes licensed projects:Construction engineering design,Mineral Resource Exploration(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:Engineering Survey Comprehensive Class A;Geological disaster control engineering construction grade A;Municipal Public Works Construction General Contracting Grade II;Surveying and Mapping Class B;Geological Prospecting;Engineering Consulting Grade A(Geotechnical Engineering,Hydrogeology,engineering survey);Level 3 professional contracting of foundation and foundation engineering;Level 3 professional contracting of earthwork engineering;Municipal maintenance qualification level B;Geological Hazard Risk Assessment;Geological disaster control engineering survey;Geological disaster control engineering design;3D geological modeling;Smart city platform construction;Construction project water resource demonstration;Geothermal and shallow geothermal energy exploration,Design and Construction;groundwater,the soil,Mine Environmental Restoration and Management;tunnel Engineering,Professional contracting of building decoration and decoration engineering;construction work,Mechanical and electrical engineering construction general contracting;Water conservancy and hydropower project construction general contracting;Professional contracting of earth and stone works;Engineering Survey Services(engineering drilling,Well sinking);agricultural products,the soil,Environmental monitoring;Urban and rural planning;Machinery and Equipment Leasing;type,copy,Land Consolidation Services,Land Survey and Evaluation Services,Planning and Design Management,Ecological Restoration and Ecological Protection Services,Environmental Consulting Services,Soil Pollution Control and Restoration Services,Soil Environmental Pollution Prevention and Control Services,Environmental Protection Monitoring,Water Environment Pollution Prevention and Control Services,Water Conservancy Related Consulting Services,water resource management,Ecological resource monitoring,Hydrological Services,water pollution control,Solid Waste Treatment,Technical Services,technology development,technical consulting,Technology Exchange,technology transfer,Technology Promotion(Except for projects subject to approval by law,Carry out business activities independently in accordance with the law with a business license)

Shandong Geological and Mineral Surveying and Mapping Co., Ltd., established on 1998-01-08, Business scope includes licensed projects:Mapping service;Construction Engineering Survey;Construction of geological disaster control engineering;Geological disaster control engineering survey;Packaging and decoration printing;Print binding service;document,Information and other printed matter printing.(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:Geographic Remote Sensing Information Service;Labor service(Does not include labor dispatch);Technical Services,technology development,technical consulting,Technology Exchange,technology transfer,Technology Promotion;Sales of special equipment for geological exploration;Marine environmental monitoring and detection equipment sales;Sales of special instruments and meters for environmental monitoring;drawing,Sales of computing and measuring instruments;software development;Information system integration service;internet data service;Satellite Remote Sensing Application System Integration;Ocean engineering equipment sales;Information security equipment sales;Manufacturing of electronic measuring instruments;Optical Instrument Sales;Auto New Car Sales;Machinery sales;Experimental analysis instrument sales;Smart Unmanned Aerial Vehicle Sales;navigation,surveying and mapping,Sales of Meteorological and Oceanographic Special Instruments;graphic design;Advertising Design,acting;advertisement making;Graphic design and production;Typing and copying;office services;Professional Design Services;Corporate Image Planning;Conference and Exhibition Services;Organize cultural and artistic exchange activities.(Except for projects subject to approval by law,Carry out business activities independently in accordance with the law with a business license)

Object Reservoir, Inc. develops and provides reservoir analysis and well modeling and forecasting tools for the oil and gas industry. It offers saige for unconventional and shale gas reservoir modeling, orpheus for conventional reservoir modeling, analytic forecasting, modeling tool for shale wells and reservoir modeling engine. The company was founded by John O. Mouton in 1995 and is headquartered in Houston, TX.

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

Hitec Co. Ltd. is a private company headquartered in Japan, with operations in the United States. The firm manufactures and sells food stuffing machines.

Green + Joint Stock Corp. engages in the manufacture and distribution of pharmaceutical and herbal products. The company was founded in 2016 and is headquartered in Ben Tre, Vietnam.

China Railway Design Group Co., Ltd., established on 1992-07-21, The scope of business includes undertaking surveys of foreign and domestic-funded projects,consult,Design and Supervise Projects;Equipment required for the above projects,Material export;Contracting and strength,scale,country with performance(territory)Foreign engineering projects;External dispatch of the department's survey,consult,Design and supervision labor personnel;In the country(territory)Hold various enterprises abroad;Manage the export business of the company's self-produced products and technologies and the machinery and equipment required by the company,spare parts,Import business of raw and auxiliary materials and technologies(Except for the goods and technologies that the state restricts the company to operate or prohibits the import and export of);Undertake domestic engineering survey,surveying and mapping,consult,design,supervision,EPC,Engineering pile detection and geological disaster prevention engineering construction projects;Consulting services related to the above business;Construction project bidding agency business;Railway Bridge Verification;Soil and Water Conservation Scheme Compilation and Environmental Impact Assessment of Construction Projects;Surveying instruments and drilling rig maintenance;Rental business of self-owned houses;Engineering Design of Public Security Technical Protection System,construction;General cargo;The following limited branch operations:stay(Items subject to approval by law,Business activities can only be carried out after approval by relevant departments)