PetroChina Kunlun Gas Co., Ltd. Dalian Gas Branch is a branch established by PetroChina Kunlun Gas Co., Ltd. in Dalian City, Liaoning Province, and is subordinate to China National Petroleum Corporation (CNPC). It is one of the primary urban gas suppliers in Dalian City, responsible for franchised gas supply operations in the urban districts and certain county-level towns, and deeply involved in constructing the regional natural gas security-supply system featuring “multiple gas sources, an integrated pipeline network, and coordinated planning.” The company’s core businesses include piped gas supply (serving residential, commercial, and industrial users), design and construction of gas facilities (holding Grade III General Contracting Qualification for Gas Engineering Construction), sales and installation of gas appliances, gas technical consulting, and comprehensive energy services; all licensed activities are governed by the Gas Business License (License No.: Liao 202302000001G). Leveraging CNPC’s upstream gas resource advantages and synergies with the Dalian LNG Receiving Terminal, the company possesses dual-gas-source security and emergency peak-shaving capabilities. As of the end of 2024, its operations cover key urban districts—including Xigang, Shahekou, Ganjingzi, and the High-Tech Industrial Development Zone—as well as parts of Jinpu New Area and Lvshunkou District, serving over 850,000 piped gas users with an annual gas supply volume of approximately 320 million cubic meters. The company has obtained ISO 9001, ISO 45001, and ISO 14001 certifications; has built a GIS-based digital pipeline network system integrated into Dalian City’s Urban Lifeline Safety Project Supervision Platform; has deployed over 720,000 NB-IoT smart gas meters at scale; achieves a remote meter-reading rate of 98.6%; and responds to abnormal-event alerts within ≤2 hours. Key projects successfully implemented include the relocation and modification of gas pipelines for Dalian Metro Line 5, dedicated gas pipelines for the Dalianwan Subsea Tunnel, and replacement of heating boilers with gas-fired systems in the Lvshun Economic Development Zone. Additionally, the company has launched a demonstration microgrid energy-supply project integrating “gas + photovoltaics + energy storage” in the High-Tech Industrial Development Zone. Areas of collaboration include gas infrastructure construction and renovation, comprehensive energy solutions for industrial and commercial customers, integrated intelligent gas-system solutions, application of corrosion-resistant PE piping technology for saline-alkali soils, and joint implementation of regional clean-energy substitution projects.

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.