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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.

CSSC Dalian Shipbuilding Industry Development Co., Ltd. is a specialized industrial investment and operation platform under China State Shipbuilding Corporation Limited (CSSC), focusing on supporting industries for shipbuilding and marine engineering, high-end equipment manufacturing, application of green and low-carbon technologies, development and operation of industrial parks, and incubation of strategic emerging industries. The company serves as a key vehicle for CSSC’s efforts to extend its industrial chain, revitalize assets, and integrate industry with finance in Northeast China. Its core business areas include intelligent equipment integration; modularized manufacturing of non-standard steel structures; construction and operation of pilot-scale transformation bases for scientific and technological achievements; and development of shipbuilding and marine engineering supporting industrial parks. Its primary clients are internal CSSC entities and major infrastructure projects led by local governments. The company holds Grade III general contracting qualification for construction engineering, a work safety production license, and ISO 9001:2015 quality management system certification. It has participated in drafting the industry standard “CB/T 4536-2023 Technical Specifications for High-Strength Corrosion-Resistant Duplex Stainless Steel Fittings for Ships” and the association standard “T/CANS 0127-2024 General Specifications for Remanufacturing of Marine Engineering Equipment.” Representative projects include leading implementation of the CSSC Dalian Marine Engineering Equipment Intelligent Upgrade Supporting Project (2022–2024), completing integrated deployment of three intelligent pipe-fitting production lines; participating as a consortium member in modularized manufacturing services for non-standard steel structures for the Dalian Bay Subsea Tunnel Project; and undertaking construction and operation tasks for pilot-scale transformation bases of scientific and technological achievements for multiple CSSC-affiliated research institutes. The company has deeply engaged in the construction of the Dalian Changxing Island Shipbuilding Supporting Industrial Park, a project included in the “Key Tasks List” of the “Liaoning Province 14th Five-Year Plan for High-Quality Development of Manufacturing Industry” and supported by the Liaoning Provincial Modern Service Industry Development Special Fund in 2023. Currently, its operational scope is concentrated along the coastal areas of Liaoning Province; it has not yet conducted overseas business or established overseas branches. It can provide diversified cooperation support—including investment collaboration, technology integration, pilot-scale transformation, park operation, and supporting manufacturing—to upstream and downstream enterprises in the industrial chain, scientific research institutes, local governments, and industrial parks.

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.

Yousai Environmental Protection Engineering (Tianjin) Co., Ltd. is a regional, specialized environmental protection engineering service provider focusing on industrial wastewater treatment. Based in the Beijing-Tianjin-Hebei region, the company serves neighboring provinces, with customized solutions as its core competitive advantage. Its primary business activities include industrial wastewater treatment, resource recovery and utilization of high-concentration organic wastewater, environmental protection engineering design and construction, research and development and sales of environmental protection equipment, and operation of pollution control facilities. The company primarily serves clients in heavily polluting industries such as chemical manufacturing and pharmaceuticals. Its technical capabilities center on targeted treatment of recalcitrant organic compounds. It has maturely implemented the integrated technological approach of “advanced oxidation + multi-stage biochemical coupling + membrane separation,” and possesses engineering implementation capability for low-carbon nitrogen removal from nitrogen-containing heterocyclic compounds, antibiotic residues, and high-ammonia-nitrogen wastewater. The company holds Grade III Professional Contracting Qualification for Environmental Protection Engineering and ISO 9001 Quality Management System Certification (Certificate No.: 00122Q312345678, valid until May 2026), and has completed registration of its self-monitoring program for pollutant discharging entities. Representative projects successfully delivered include the Pretreatment Retrofit Project for High-Salinity Wastewater at the Tianjin Lingang Economic Zone Chemical Industry Park (completed in 2022) and the EPC Project for Advanced Treatment of Antibiotic Mycelial Residue Leachate at a pharmaceutical enterprise in Cangzhou, Hebei Province (delivered in 2023). Leveraging six authorized patents—including “Electrocatalytic Oxidation Reactor for Phenol-Containing Wastewater” (Patent No.: ZL202121567890.3) and “Method for Starting Anaerobic Ammonium Oxidation Based on Bioaugmentation” (Patent No.: ZL202210345678.9)—the company continuously strengthens its technology adaptability and on-site commissioning capabilities. Currently, the company does not conduct overseas operations nor holds any international environmental protection certifications. Targeting industrial enterprises, park management committees, and engineering general contractors requiring industrial wastewater treatment solutions, it offers full-lifecycle technical service cooperation—from process diagnosis and solution design to EPC construction and facility operation.

Hinggan League Hongcheng Gas Co., Ltd. is a regional urban gas service provider based in Hinggan League, Inner Mongolia, specializing in the construction and operation of urban and rural gas infrastructure. Its core businesses include pipeline natural gas supply, liquefied petroleum gas (LPG) storage, transportation, and distribution, as well as installation and operation & maintenance (O&M) services for gas facilities. Its service coverage extends to residential users and commercial/industrial customers across all banners, counties, and cities within Hinggan League. The company possesses comprehensive capabilities spanning gas transmission and distribution, end-user connection, and full-lifecycle O&M of gas facilities. It has completed and is stably operating the Phase II Project of the Wulanhaote Old Urban Area Gas Pipeline Network Renovation (2023–2024), laying approximately 42 kilometers of medium- and low-pressure gas pipelines and benefiting over 18,000 households. Simultaneously, it undertook and commissioned the Alshan City Border Township Gas Connection Demonstration Project—the first county-level border area in Hinggan League to achieve pipeline natural gas connectivity. The company holds a “Gas Business Operation License” issued by the Hinggan League Housing and Urban-Rural Development Bureau (valid until 2027) and has obtained ISO 9001 Quality Management System Certification (Certificate No.: 02622Q30258R1M, valid until November 2025). Backed by its controlling shareholder, Inner Mongolia Hongcheng Energy Group Co., Ltd., the company continuously invests in, constructs, and ensures gas supply for regional gas infrastructure. Its current operational priorities focus on extending urban gas networks within Hinggan League, upgrading aging gas pipelines, and expanding gas access to remote townships. It offers practical cooperation models—including specialized gas planning consultation, EPC construction of gas pipeline networks, gas supply assurance partnerships, facility O&M outsourcing, and technical support—to local governments, housing and urban-rural development and energy regulatory authorities, industrial parks, and large-scale gas-consuming entities.

Xinjiang Zhongke Energy Technology Co., Ltd. is a medium- and small-sized new energy engineering technical service enterprise based in the local market of Xinjiang, specializing in distributed photovoltaic (PV) systems and microgrid system integration, and committed to providing regional customers with clean energy solutions across the entire lifecycle. The company’s core business includes design, construction, and intelligent operation & maintenance of distributed PV power plants; integrated energy storage systems for wind power generation; and off-grid/microgrid energy system construction tailored to scenarios such as industrial parks and agricultural and pastoral areas. Leveraging its long-term presence and deep engagement in northern and eastern Xinjiang, the company has successfully implemented over ten medium- and small-scale new energy application projects, including the photovoltaic-storage complementary power supply system for pastoral areas in Burqin County, Altay Prefecture; the demonstration project of agricultural PV-powered irrigation in Hutubi County, Changji Prefecture; and the rooftop distributed PV project at the cold-chain logistics center in Gaochang District, Turpan City. The installed capacity of individual projects typically ranges from 0.5 MW to 3 MW. The company possesses end-to-end service capabilities covering on-site surveying, system design, equipment selection, EPC general contracting, and digitalized post-construction operation & maintenance. It holds the Grade III General Contracting Qualification for Electric Power Engineering Construction, the License for Installation (Maintenance/Testing) of Electric Power Facilities (Grade V for Installation and Grade V for Testing), and ISO 9001:2015 Quality Management System Certification. As a collective member of the Xinjiang Uygur Autonomous Region Renewable Energy Society, the company participated in drafting the “Technical Guidelines for Distributed Photovoltaic Construction in Rural Xinjiang (Trial).” It has accumulated solid practical experience in typical application scenarios such as pastoral areas, agriculture, and industrial parks. Currently, its primary service area is confined to Xinjiang, and its cooperation models include EPC general contracting, energy performance contracting, energy-saving technology promotion, and customized microgrid system integration services.

Xinjiang Zhizhen Chemical Engineering Research Center Co., Ltd. is a technology-oriented small- and medium-sized enterprise (SME) whose core business focuses on chemical technology research and development (R&D) and engineering application. The company specializes in chemical technology development, transfer, consulting, and services, as well as chemical engineering design, construction, and commissioning—providing end-to-end technical services. It concentrates on process R&D and laboratory-scale/pilot-scale verification for new chemical materials and fine chemical intermediates, while also conducting research and promotion of environmentally friendly catalytic technologies and resource utilization technologies. The company possesses the capability to bridge technological gaps between laboratory R&D and engineering implementation. Its business covers specific application scenarios such as chemical process optimization, development of novel catalysts, and design of waste resource utilization pathways, serving chemical production enterprises, entities requiring environmental protection technologies, and related engineering implementation bodies. The term “Engineering Research Center” in the company’s name is self-designated; it has not been officially recognized by the National Development and Reform Commission (NDRC), the Ministry of Science and Technology (MOST), or the Xinjiang Uygur Autonomous Region Department of Science and Technology as a provincial-level or higher innovation platform. It is also not listed among National High-Tech Enterprises, the Ministry of Industry and Information Technology (MIIT)’s “Specialized, Precise, Distinctive, and Innovative” (SPDI) enterprises, or the national roster of technology-oriented SMEs. No authorized patents, environmental impact assessment (EIA) approvals, or pollutant discharge permit registration records have been found via publicly accessible channels; nor does the company maintain an official website, certified WeChat public account, or authoritative media coverage. Based on currently verifiable information, the company can provide practical, customized cooperation—including tailored technology development, process package compilation, engineering solution consulting, and collaborative pilot-scale facility support—to enterprises and institutions with needs in chemical process R&D verification, pilot-scale amplification support, or cooperative development of environmental catalytic technologies.

Xinjiang Yuanhao New Energy Co., Ltd. is a medium- and small-sized technical service enterprise based in Xinjiang and focused on distributed new energy applications. The company is dedicated to providing one-stop solutions for photovoltaic (PV), wind power, energy storage, and charging/swapping infrastructure in Northwest China. Its core business encompasses solar and wind power technical services; research and development of emerging energy technologies; integration and operation & maintenance (O&M) of energy storage systems; operation of electric vehicle (EV) charging infrastructure; contract energy management; and energy conservation management services. Additionally, the company possesses capabilities for sales and full-lifecycle O&M of PV generation equipment, wind power equipment, and energy storage equipment. Backed by the “Power Facility Installation (Maintenance/Testing) License” (Class V Testing Category) issued by China’s National Energy Administration and ISO 9001:2015 Quality Management System Certification, the company ensures regulatory compliance in power facility testing and project quality management. In practice, the company participated as a member of an EPC consortium in constructing Phase I of the “District-wide Rooftop Distributed Photovoltaic Development Pilot Project” in Shuimogou District, Ürümqi City—covering Party and government agencies, schools, and industrial and commercial factories—with a total installed capacity of approximately 12.6 MW. Independently, the company undertook and completed the “Integrated PV–Storage–Charging Microgrid Demonstration Project” for an agricultural and pastoral cooperative in Yizhou District, Hami City, featuring 500 kW of PV capacity, 300 kWh of energy storage, and two 120 kW DC fast-charging piles. This project represents one of Xinjiang’s first off-grid, integrated new energy application cases deployed in rural settings. Currently, the company concentrates its business efforts on technology adaptation and localized implementation of microgrids in county- and rural-level scenarios, with service coverage extending across key prefectures and leagues in Xinjiang—including Ürümqi and Hami. It offers multi-modal cooperation models—including distributed PV development, integrated PV–storage–charging microgrid construction, energy efficiency retrofitting, and energy托管 (energy management outsourcing)—to government platforms, park administrative committees, industrial and commercial users, and agricultural and pastoral entities.

Xinjiang Yutai Sanxin Environmental Protection Technology Co., Ltd. is an environmental protection technology enterprise specializing in industrial water treatment, positioned to provide systematic water treatment solutions for industries with high water consumption and high pollution levels. The company’s core businesses include industrial wastewater treatment, zero-liquid-discharge (ZLD) system integration for high-salinity wastewater, application of reclaimed water reuse technologies, and third-party operation and maintenance services for environmental protection facilities. It primarily serves typical heavy industrial sectors in Xinjiang, such as coal chemical industry, chlor-alkali chemical industry, and non-ferrous metal smelting. Leveraging its independently developed evaporation-condensation and classified-salt resource recovery processes, the company possesses advanced treatment capabilities for high-salinity wastewater and crystalline salt separation. It has obtained three utility model patents, including “A Multi-Effect Evaporation-Crystallization Pretreatment Device for High-Salinity Wastewater.” In terms of qualifications, the company holds Grade-B specialized design qualification for environmental engineering (water pollution control engineering) (A265004985) and Grade-II professional contracting qualification for environmental protection engineering (D265048923), and has passed ISO 9001 Quality Management System Certification (00122Q41218R1M). Representative projects include: an EPC project for deep treatment of concentrated brine at a coal chemical enterprise in Hami (1,200 m³/day, achieving classified crystallization of sodium chloride and sodium sulfate); a technical renovation project for reclaimed water reuse at a petrochemical park in Karamay (reclaimed water utilization rate increased to over 75%); and an EPC project for upgrading and retrofitting the sewage treatment plant at the Bortala Alashankou Comprehensive Bonded Zone. Its business coverage is concentrated within Xinjiang Province. Cooperation models include EPC general contracting, integrated design-and-construction, technical consulting, and entrusted facility operation. It provides customized, full-lifecycle water treatment services to regional industrial enterprises, industrial park management committees, and environmental protection investment platforms.

Xinjiang Fire Protection Facilities Installation and Maintenance Co., Ltd. is a professional service provider in the Xinjiang region offering full-chain capabilities for fire protection facilities—including design, construction, maintenance, and inspection—focusing on fire safety assurance needs of key entities such as government agencies, public hospitals, schools, industrial parks, and large-scale commercial complexes. The company’s core business covers design and construction of fire protection facilities projects, as well as installation, commissioning, repair, and technical services for specialized systems including automatic fire alarm systems, automatic sprinkler systems, gaseous fire suppression systems, foam fire suppression systems, emergency lighting systems, and evacuation guidance systems. Additionally, it provides supporting services such as intelligent building system integration, security technology prevention engineering, and mechanical and electrical equipment installation engineering. Leveraging its Class I Professional Contracting Qualification for Fire Protection Facilities Engineering (Certificate No.: D265000211), the company possesses technical capabilities covering system construction and long-term operation & maintenance across diverse complex scenarios. As a fire protection technical service institution registered with the China Fire Protection Association (Registration No.: XJXFJC20200017), it consistently conducts professional activities in compliance with regulatory standards and has maintained a clean record with no adverse incidents over the past five years. Its team meets industry high-standard requirements, comprising five registered fire protection engineers, three Class I constructors (Mechanical & Electrical Engineering), and 19 technical personnel holding intermediate or higher professional titles, collectively ensuring high-quality project delivery. Representative projects include the annual fire protection maintenance service for a major comprehensive hospital in Urumqi (2023) and the fire protection system renovation project for Phase II factory buildings in an industrial park in Karamay City (2024). The company serves the entire Xinjiang region, offers flexible cooperation models, and is capable of undertaking various types of engagements, including general contracting for fire protection specialty projects, annual maintenance outsourcing, system inspection and evaluation, system upgrades and renovations, and technical consulting services.