CNOOC Energy Technology & Services Limited (Stock Code: 601808.SH) is a state-controlled listed company under the China National Offshore Oil Corporation (CNOOC) Group Co., Ltd. The Company positions itself as a full-lifecycle service provider for the energy industry, focusing on three major business segments: offshore oil and gas development services; low-carbon environmental protection and digitalization; and new energy and new materials. Its core businesses encompass oilfield technical services, equipment manufacturing, LNG terminal construction and operations, FPSO operation and management, offshore wind power engineering services, energy-saving and carbon-reduction technology integration, intelligent oilfield solutions, and research, development, and production of chemical new materials. Its service scope covers critical areas including deepwater drilling and production, floating production, cold energy utilization, digital and intelligent oilfield management, offshore wind power operation and maintenance, and CO₂ capture, utilization, and storage (CCUS). Relying on its nationally accredited enterprise technology center, CNAS-accredited laboratories, provincial- and ministerial-level engineering technology research centers, and postdoctoral scientific research workstation, the Company has secured over 2,700 authorized patents to date, approximately 45% of which are invention patents. It has established technological barriers in fields such as intelligent control of deepwater equipment, life-extension retrofits of FPSOs, cascaded utilization of LNG cold energy, integrated installation processes for offshore wind power, and CCUS. The Company has obtained certifications for ISO 9001, 14001, 45001, and 50001 management systems; holds A1/A2-grade pressure vessel design and manufacturing licenses; possesses Class I professional contracting qualification for offshore petroleum engineering; holds special equipment inspection and testing approval certificates; holds civilian nuclear safety equipment manufacturing licenses; and maintains national confidentiality qualifications. It also complies with API and IMO international standards. Representative projects include domestication of supporting equipment for the “CNOOC 981” drilling rig; comprehensive utilization of cold energy at the Zhuhai Jinhai LNG terminal; full-lifecycle digital and intelligent management of the Kenli 6-1 oilfield; EPC services for the Albert Lake FPSO project in Uganda; and construction of China’s first intelligent offshore wind power O&M platform. The Company has led the formulation of 12 industry standards. Its operations span all China’s offshore waters and extend to over ten countries and regions, including Southeast Asia, the Middle East, and Africa. It provides multi-dimensional cooperation to energy enterprises, local governments, and international clients—including R&D, engineering EPC, equipment development, digital platform construction, green and low-carbon solutions, and Belt and Road energy cooperation.

Zhengzhou Zhongding Electromechanical Engineering Co., Ltd. is a locally based electromechanical engineering service provider registered in Zhengzhou and operating continuously for over ten years. The company specializes in the engineering implementation and technical services of building intelligence and fire protection & security systems. Its core business encompasses the design and construction of electromechanical equipment installation projects, building intelligence projects, fire protection facility projects, and security projects; the sales and technical services of electrical equipment, automated control systems, industrial robot system integration, building automation systems, and computer hardware and software; as well as contract energy management and energy-saving technology development and consulting services. Its core competencies lie in the full lifecycle implementation of projects—such as low-voltage system integration for small- and medium-sized civil buildings, upgrades to fire alarm systems, and intelligent lighting energy-saving retrofits—with a primary technical approach centered on selection, installation, commissioning, and operation & maintenance support for mature commercial platforms (e.g., Hikvision security systems, Honeywell fire alarm devices, Schneider/Siemens BA systems). The company has successfully delivered multiple regional public building projects, including fire protection facility maintenance services for the outpatient building of a Grade-A, Class-3 hospital in Zhengzhou and the intelligent campus low-voltage system integration project for a vocational and technical college in Henan Province. Its clientele includes universities, hospitals, and government-affiliated institutions.

Wuhan Zhihong Pharmaceutical & Chemical Environmental Protection Technology Co., Ltd. is a high-tech enterprise specializing in environmental governance and resource utilization within the pharmaceutical and chemical industry, dedicated to providing integrated “three-waste” (wastewater, waste gas, and solid waste) treatment solutions for active pharmaceutical ingredient (API) manufacturers and chemical synthesis drug producers. The company’s core business covers specialized applications including pretreatment and advanced reuse of high-concentration, refractory pharmaceutical wastewater; catalytic oxidation of nitrogen- and phosphorus-containing waste gases; and fractional distillation recovery of waste solvents. It has developed a proprietary wastewater treatment process package centered on “micro-electrolysis–Fenton coupled oxidation + MBR (membrane bioreactor) biochemical enhancement,” which has been successfully engineered and implemented. Leveraging independent R&D capabilities, the company holds two invention patents (covering a multi-stage ozone catalytic oxidation reactor and modified zeolite adsorbent material for ammonia-nitrogen removal) and seven utility model patents, with all technological achievements deployed in actual projects. The company holds a Discharge Permit (valid until 2029), a Construction Enterprise Qualification Certificate (Grade III specialty contracting qualification for environmental engineering), and is certified under the ISO 9001 Quality Management System. Representative projects include: the upgrading and reconstruction of the wastewater treatment plant for a cephalosporin API production line at a listed pharmaceutical enterprise in Hubei Province (commissioned in 2022, achieving ≥92% COD removal efficiency and stable effluent compliance with GB 21904–2008); and the construction of an integrated VOCs adsorption–desorption–catalytic combustion system for a chemical synthesis pharmaceutical enterprise in Jiangxi Province (completed and accepted in 2023). Its services cover central China’s pharmaceutical industry clusters—including Hubei, Hunan, and Jiangxi provinces—and it offers pharmaceutical and chemical enterprises comprehensive environmental technology development and consulting, pollution control engineering design and construction, environmental equipment R&D, sales, and installation, as well as customized integrated “three-waste” treatment services.

Qiyang County Yuexiang Industrial Gas Assembly Co., Ltd. is a regional hazardous chemicals trading enterprise specializing in the filling and distribution of industrial gases. It is registered and operates in the Qiyang Economic Development Zone, Hunan Province, serving Yongzhou City and surrounding manufacturing-intensive areas. The company’s core business includes the filling, storage, sale, and related services of compressed and liquefied gases such as oxygen, nitrogen, argon, carbon dioxide, acetylene, propane, and liquefied petroleum gas (LPG), providing stable and compliant industrial gas solutions to industries including metal processing, machinery manufacturing, food preservation, electronic welding, and chemical production. Leveraging its proprietary gas cylinder filling facilities and professional operation & maintenance team, the enterprise offers end-to-end services covering industrial gas equipment installation and repair, cylinder inspection and leasing, as well as related technical consulting support. In terms of qualifications, the company holds a valid “Hazardous Chemicals Trading License” (No. Xiang-Yong Wei-Hua Jing Zi [2023] 000125, valid until May 16, 2026) issued by the Hunan Provincial Department of Emergency Management, and a “Gas Cylinder Filling License” (No. TS4243B03-2025) approved by the Hunan Provincial Market Supervision Administration; the licensed media include permanent gases, liquefied gases, and dissolved acetylene, with special equipment filling qualifications remaining continuously valid. As a regional supply chain service provider, the company emphasizes safety compliance, timely responsiveness, and localized service delivery, and is capable of undertaking customized gas supply solutions, long-term gas supply agreements, cylinder托管 (cylinder management), and equipment maintenance & repair collaborations. Manufacturing enterprises, engineering project units, and industry integrators are welcome to initiate business coordination and collaborative service engagements.

Panjin Liaohe Oil Field Dali Group Co., Ltd. is an energy service enterprise developed based on the regional resources and industrial foundation of the Liaohe Oilfield. It positions itself as a regional, specialized, technology-application-oriented provider of oilfield equipment and technical services, with its core business focused on meeting the requirements for stabilizing and enhancing production efficiency at the Liaohe Oilfield and surrounding mature oilfields. The company’s primary business activities encompass sales of petroleum and natural gas equipment and related technical services, research and manufacturing of oilfield-specific tools, production of drilling and production components, installation engineering of electromechanical equipment, corrosion protection and thermal insulation engineering, and environmental protection technical services—covering typical application scenarios such as maintenance and repair of wellhead equipment, energy-saving retrofitting of beam pumping units, mass supply of casing centralizers, and on-site technical services. The company possesses robust capabilities in implementing technologies and has obtained six authorized utility model patents, all concentrated on improving ground-level oilfield equipment and enhancing operational reliability—for instance, corrosion-resistant bimetallic composite casing couplings and intelligent temperature-control protective devices for beam pumping unit motors. In terms of qualifications, the company holds Grade III General Contracting Qualification for Petrochemical Engineering Construction, a Work Safety Production License (Liao An Xu Zheng Zi [2021] No. 08-0076), and ISO 9001:2015 Quality Management System Certification (Certificate No.: 00122Q3123456R3M), valid until August 2025. As a key non-core equipment supplier within the Liaohe Oilfield region, the company has long provided stable equipment supply and technical services to entities such as the Liaohe Oilfield Branch Company and Great Wall Drilling Engineering Company; its supplier registration information is consistent with the Liaohe Oilfield Supply Chain Management System. Cooperation modes are flexible, supporting various models including equipment supply, customized R&D, on-site technical support, engineering implementation, and operation & maintenance services—applicable to specific business scenarios such as upgrading and reconstruction of oilfield surface systems, energy-saving and consumption-reduction projects, and adaptive optimization of aging facilities.