Earth Tool Co. LLC develops, designs and manufactures construction products. Its products include piercing tools, pipe bursting, pipe ramming, hydro guide winches, HDD tooling, lining systems and rock hammers. The company was founded in 1989 and is headquartered in Lake Mills, WI.

The Charles Machine Works, Inc. manufactures and distributes construction equipment and parts. It offers trenchers, vibratory plows, pneumatic piercing tools, backhoes, electronic guidance, and locating tools, horizontal directional drilling systems, and tandem-axle trailers. It also offers interchangeable and utility attachments, loaders, fluid management equipment, rod pushers, pipe busters, and replacement parts. The company was founded by Carl Frederick Malzahnin 1902 and is headquartered in Perry, OK.

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.

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

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.

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.

Part of NOV, Inc., Smart Drilling GmbH is a company headquartered in Gelsenkirchen, Germany. The firm manufactures and services drilling equipment. Stefan von den Driesch and Werner Vorhoff are the current co-CEOs of the company.

TRACTO is a provider of trenchless technology in the field of special machine construction for the underground laying and renewal of pipelines. They specialize in the development and manufacture of intelligent solutions for the underground re-laying and trenchless renewal of pipelines.

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

Part of Quanta Services, Inc., Quanta Associates LP is a company headquartered in the United States specializing in electrical work.

Nanjing Zhuoci Electromechanical Technology Co., Ltd., established on 2017-09-28, Business scope includes research and development of electromechanical products,Production,Sales,Technical Services;automated system,Research and development of CNC system for machine tools,production and sales;Research and development of automobiles and spare parts,Sales and after-sales service;electrical tools,electronic product,Research and development of electrical equipment,Production,Sales and after-sales service;software development,technology transfer,Technical Services;Expo Services;Cultural and artistic exchange planning;translation service.(Items subject to approval by law,Business activities can only be carried out after approval by relevant departments)

Merlin Technologies, Inc. provides composite research, design and manufacturing, engineering and consulting services to the military and commercial industries. The company is headquartered in Camarillo, CA.

China Coal Science and Technology Ecological Environment Technology Co., Ltd., established on 2018-10-31, Business scope includes general items:Technical Services,technology development,technical consulting,Technology Exchange,technology transfer,Technology Promotion;Ecological resource monitoring;Mineral dressing;software development;Engineering Management Services;Planning and Design Management;Solid Waste Treatment;Environmental Protection Monitoring;Land Survey and Evaluation Services;Basic geological survey;Ecological Restoration and Ecological Protection Services;water pollution control;Eco-environmental material sales;Sales of new organic active materials;Geological disaster management service;Land Consolidation Services;Geographic Remote Sensing Information Service;real estate appraisal;Cement Products Manufacturing;Testing machine manufacturing;building block manufacturing;Natural Ecosystem Conservation and Management;Air Pollution Control;(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)licensed items:Various construction activities;General contracting of housing construction and municipal infrastructure projects;Geological Hazard Risk Assessment;Geological disaster control engineering survey;Geological disaster control engineering design;Construction of geological disaster control engineering;Mineral Resource Exploration;Mapping service;Construction Engineering Survey;Construction engineering design;Quality inspection of construction projects;Compilation of land and space planning;advertising(radio station,television station,Newspaper Publishing Unit);Engineering cost consulting business;Hazardous Waste Management;Installation, modification and repair of special equipment;Construction Project Supervision;Inspection and testing service;mineral resources(non-coal mine)mining;(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)

Shaanxi Taihe Intelligent Drilling Co., Ltd., established on 2013-11-21, The scope of business includes mechanical and electrical equipment,Instrumentation,Geophysical instruments,Green facilities,drilling equipment,Research and development of drilling tools and special mine vehicles,manufacture,Sales,lease,Maintenance and technical consultation,Technical Services,technology transfer;Technical services for computer software development and application,technology transfer;Research and development of unconventional natural gas and new energy technologies,Technical consulting for equipment manufacturing and development,Technical Services,technology transfer;Research and development of metal and non-metal materials,processing,Sales(Exclusive control)and technical advice,Technical Services,technology transfer;Technical Consulting for Geological Exploration and Coal Mining,Technical Services,technology development,technology transfer;Geological Exploration Engineering,Geophysical engineering,Geotechnical Engineering,construction work,mine engineering,Drilling Engineering Consulting Services,survey,design,Construction and Contracting;Self-operated and agent import and export business of various commodities and technologies(Except for goods and technologies restricted and prohibited by the state).(Items subject to approval by law,Business activities can only be carried out after approval by relevant departments)

Manufactures and sells construction equipment and building materials