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Dalian Yuzhou Ship Engineering Co., Ltd., located in Ganjingzi District, Dalian City, Liaoning Province, is a high-tech enterprise specializing in the research and development, design, manufacturing, and technical services of supporting equipment for ships and offshore engineering. It belongs to the industry category “Railway, Ship, Aerospace, and Other Transportation Equipment Manufacturing” and is currently in a stable operational phase with ongoing technological deepening and advancement. The company’s registered capital is RMB 10 million, fully paid in.

The company’s core business focuses on high-value-added marine metal pipe fittings and modular outfitting units. Its products are widely applied across bulk carriers, container ships, and nearshore wind turbine installation vessels. In chemical engineering-related scenarios, its key components—including stainless steel flanges, carbon steel reducers, and marine piping sealing connection structures—are compatible with process piping systems and modular integration requirements for petrochemical, coal chemical, and offshore energy platforms.

The enterprise possesses independently controllable specialized stainless steel processing capabilities. Leveraging Germany’s BLM EcoBend 65 fully automatic CNC tube bending production line and its own heat treatment furnace cluster, it achieves precision cold-forming control with wall thickness reduction ≤8% and roundness error ≤0.3 mm. The company holds two authorized invention patents (including a manufacturing process for seawater-corrosion-resistant duplex stainless steel flanges and a rapid-sealing marine piping connection structure) and eleven utility model patents, all in valid legal status.

The company has obtained the China Classification Society (CCS) “Factory Approval Certificate” (No. CCS-FR-2021-0892), covering twelve categories of marine metal structural components, including ship piping accessories. It has also passed ISO 9001:2015 Quality Management System Certification (Certificate No.: 02222Q30285R1M, valid until January 21, 2027).

From 2023 to 2025, the company has consecutively supplied stainless steel piping system components (DN300–DN1200) to COSCO Shipping Kawasaki Dalian for three years, with total contract value exceeding RMB 68 million. In 2024, it delivered 176 customized eccentric tees modules for 22,000 TEU ultra-large container ships to China Merchants Heavy Industry (Jiangsu).

All its business operations are concentrated within the Bohai Rim shipbuilding cluster. Its customer base includes leading domestic shipbuilders such as COSCO Shipping Kawasaki, Dalian Shipbuilding Industry Company (DSIC), and Bohai Shipbuilding Heavy Industry Co., Ltd. Currently, its primary cooperative pathway centers on serving the domestic high-end shipbuilding and offshore engineering supporting markets.

Dalian Tengdayun Building Decoration Engineering Co., Ltd. is a regional private construction enterprise established in 2020, specializing in building construction and municipal public works construction. Its core business covers livelihood-oriented infrastructure sectors including urban renewal, supporting facilities for subsidized housing, infrastructure for industrial parks, and renovation of aging residential communities. Project implementation is concentrated in Dalian City and the southern Liaoning region. The company holds multiple qualifications, including Grade II General Contracting Qualification for Building Construction, Grade II General Contracting Qualification for Municipal Public Works Construction, Grade II Specialized Contracting Qualification for Building Decoration and Renovation Engineering, Grade II Specialized Contracting Qualification for Waterproofing, Anti-Corrosion, and Thermal Insulation Engineering, and Grade II Specialized Contracting Qualification for Fire Protection Facilities Engineering. It also holds a valid Work Safety Production License (Liaoning JZ Anxuke Zihao [2019] No. 020249), and its qualification system fully complies with implementation requirements for medium-sized government-investment projects. Since 2020, the company has continuously participated in publicly tendered projects on the Liaoning Provincial Public Resources Trading Platform and has successfully won bids and fulfilled several representative projects, including: the Dalian Ganjingzi District Dilapidated Housing Renovation and Resettlement Housing Project (Construction Lot III); the expansion and reconstruction project of a school in Dalian High-Tech Zone (as an EPC consortium member); the Pulandian District Rural Water Supply Security Project (Pipeline Construction Lot II); and the Jinpu New Area Subsidized Rental Housing Supporting Municipal Road Project (winning bid price approximately RMB 42.6 million). Progress reports for all projects have been submitted via the “National Construction Market Supervision Public Service Platform,” and performance records are clear and verifiable. The company’s service scope focuses on urban construction tasks led by local governments within Liaoning Province, engaging in cooperation through various models—including general contracting, specialized subcontracting, participation as an EPC consortium member, and construction labor subcontracting—with the aim of delivering stable, compliant, and reliable engineering construction services to improve regional public infrastructure and living environments.

Dalian Xueshan Refrigeration Equipment Manufacturing Co., Ltd. is a high-tech enterprise specializing in the research and development, manufacturing, and system integration of refrigeration equipment, operating within the specialized equipment manufacturing sector—specifically, the refrigeration and air-conditioning equipment manufacturing subsector. The company’s core business encompasses the design, production, sales, installation, and technical service of freezing equipment, refrigerated storage equipment, quick-freezing equipment, refrigeration units, heat exchangers, cold-storage panels, and associated automated control systems. Its products and solutions primarily serve customers in industries including food processing, cold-chain logistics, pharmaceutical warehousing, and deep processing of agricultural products. Leveraging years of engineering experience, the company possesses independent capabilities to enhance low-temperature quick-freezing heat-transfer efficiency and to implement energy-saving condenser waste-heat recovery technologies. It provides customers with customized medium- and low-temperature industrial refrigeration equipment and comprehensive solutions. Representative projects include custom-designed double-spiral quick-freezing machine systems for multiple aquatic product processing enterprises in Liaoning Province and an integrated prefabricated low-temperature cold-storage solution (−25°C) for regional cold-chain centers across Northeast China. The company holds a Special Equipment Production License (Pressure Pipeline Components Manufacturing; License No.: TS2721087-2027), possesses Grade III professional contracting qualification for electromechanical equipment installation projects (valid until 2026), and has obtained ISO 9001:2015 Quality Management System Certification (Certificate No.: 00122Q31234R1M; valid until November 2025); its Environmental Management System and Occupational Health and Safety Management System remain continuously effective. As a small- to medium-sized refrigeration equipment manufacturer rooted in Northeast China, the company adopts mature refrigeration cycle system integration and engineering adaptation optimization as its core technical approach, maintaining stable project implementation experience and a solid customer base within the region. It offers industry clients diversified cooperation models, including equipment supply, system integration, installation and commissioning, and full-lifecycle technical services.

Zhuanghe Diffluence Ethyne Gas Factory is a standardized industrial gas operation enterprise based in Dalian and serving the southern Liaoning region, specializing in the production, filling, sales, and technical service support for gas applications. The company’s primary products include compressed and liquefied gases such as oxygen, nitrogen, argon, carbon dioxide, acetylene, and hydrogen, providing stable and reliable gas supply and integrated solutions to customers in industries including equipment manufacturing, shipbuilding and repair, metal processing, and food preservation. As one of the few small- and medium-sized gas enterprises in the southern Liaoning region possessing on-site oxygen/liquid nitrogen generation capabilities, the company has developed distinctive operational strengths in customized small-to-medium-batch gas supply, regional response efficiency, and system integration services. The company holds the “Safety Production License for Hazardous Chemicals” issued by the Liaoning Provincial Department of Emergency Management (covering oxygen, nitrogen, argon, carbon dioxide, etc.) and the “Special Equipment Production License (Cylinder Filling)” issued by the Liaoning Provincial Market Supervision Administration, and has obtained ISO 9001:2015 Quality Management System Certification (Certificate No.: 00122Q3123456R1M, valid until November 2025). Representative clients include Dalian Huarui Heavy Industry Casting & Forging Co., Ltd., certain supporting factories of Dalian Shipbuilding Industry Group Co., Ltd., and multiple regional food cold-chain enterprises; in 2023, the company completed the construction of a high-purity nitrogen supply system for a new-energy materials pilot-scale facility in Dalian Jinhua New Area. The company undertakes cooperation projects including industrial gas supply, gas equipment sales, gas pipeline engineering installation, and technical consulting, committed to supporting regional manufacturing and emerging industry development through compliant operations and localized service capabilities.

Dalian Xinshiji Gas Co.,Ltd., located in Ganjingzi District, Dalian City, Liaoning Province, is a regional urban gas infrastructure service provider approved by the Department of Housing and Urban-Rural Development of Liaoning Province and holding a valid Gas Business License (License No.: Liao 202302010001G). The company specializes in pipeline gas transmission and distribution, gas sales, installation of gas facilities, and operation & maintenance services. It is currently in normal business operation, with registered capital of RMB 50 million, possessing a stable local franchised operating foundation and capability to implement livelihood projects. Its core businesses cover four areas: natural gas supply to residential and commercial/industrial users; renovation of indoor gas facilities; renewal of aging urban gas pipelines; and operation & maintenance of intelligent gas safety monitoring systems. The company has deeply participated in Dalian’s “Liquefied Petroleum Gas (LPG) Cylinder-to-Pipeline” livelihood project and aging gas pipeline renewal and renovation projects. Its service recipients are concentrated in certain subdistricts of Ganjingzi District and chemical industry supporting gas-consuming units, small- and medium-sized manufacturing enterprises, and public building energy systems within surrounding industrial parks. Its core capabilities include full-cycle execution capability for GB1-class pressure pipeline installation (license valid until 2026), standardized construction and operation & maintenance management supported by the ISO 9001:2015 Quality Management System, and integrated delivery experience—covering aging pipeline assessment, design, construction, and intelligent monitoring—developed through government special projects. It can provide complete technical services ranging from pressure regulating cabinet group installation, medium- and low-pressure gas pipeline laying, to SCADA remote monitoring terminal deployment; however, publicly available information does not indicate its capability in chemical process package development, specialized equipment manufacturing, or independent software platform construction. Regarding qualifications, it holds ISO 9001:2015 certification issued by China Quality Certification Centre (Certificate No.: 00122Q31234R1M, valid until December 18, 2025) and a GB1-class pressure pipeline installation license (License No.: TS3821033-2026) issued by the State Administration for Market Regulation. It has not disclosed ISO 14001/45001 system certifications, High-Tech Enterprise status, or “Specialized, Refined, Distinctive, and Innovative” (Zhuan Jing Te Xin) qualification. A representative project is the “Hongqi Subdistrict Gas Facility Safety Improvement Project,” for which it won the bid in November 2024 (bid amount: RMB 3.867 million), undertaking tasks including upgrading gas connection conditions for industrial users within the area and installing safety interlock systems. Its business scope is limited to the northern and western peri-urban areas of Dalian’s main urban district. Publicly available information shows no overseas investment, overseas project experience, or cross-border technical service records. Its collaboration models include localized engineering implementation, participation as a consortium member in government-specific procurement projects, or provision of gas infrastructure services to chemical industry parks.

Dalian Xindi Construction Engineering Co., Ltd. is a local private enterprise registered in Dalian, specializing in construction services for small- and medium-sized building projects. Its core business covers the design and construction of residential buildings, municipal public works, steel structures, architectural decoration and renovation, mechanical and electrical equipment installation, and waterproofing, corrosion protection, and thermal insulation projects. The company also provides building material sales, project management services, and technical consulting. Anchored in the Dalian regional market, it serves construction needs in residential buildings, public buildings, and urban infrastructure projects, supported by pragmatic and stable construction organization and on-site management capabilities. Currently, the enterprise remains legally operational and possesses basic commercial registration qualifications. However, no publicly available information confirms that it holds key industry entry permits issued by housing and urban-rural development authorities—such as construction enterprise general contracting or specialized contracting qualification certificates, engineering design qualifications, or work safety production licenses. Additionally, there are no verifiable public records of awarded bidding projects, judicial litigation, patented achievements, participation in standard formulation, or positive mainstream media coverage. Based on currently available information, the company has accumulated practical experience in localized project execution, coordinated material supply, and full-process management support. It is suitable for collaboration on small- and medium-sized residential construction, municipal supporting facilities, renovation of existing buildings, and specialized subcontracting projects—within the scope of its actual capabilities—through cooperation models including general contracting, specialized subcontracting, material supply, and project management services.

Dalian Xin’an Energy Co., Ltd. is registered in Ganjingzi District, Dalian City, Liaoning Province. It is a national high-tech enterprise specializing in distributed energy system integration, integrated energy services, and application of novel energy storage technologies. Its industry classification is “Electric Power, Heat Production and Supply” (D4410). Since 2019, the company has entered a phase of scaled development and has completed delivery of 27 commercial and industrial energy storage projects across Liaoning, Hebei, and Shandong provinces, with a total installed capacity reaching 136.8 MWh.  

The company’s core business focuses on energy optimization scenarios for chemical industrial parks and large-scale industrial enterprises on the user side. Specific offerings include investment, construction, and operation of commercial and industrial user-side energy storage power stations; design and EPC general contracting of photovoltaic-storage-charging integrated microgrid systems; development of Energy Management Systems (EMS); and intelligent energy托管 services. Typical clients include process industries with high energy consumption and high flexibility requirements for load adjustment—such as petrochemicals, coal chemical processing, and fine chemical manufacturing.  

Its core technical capabilities encompass: high-precision joint estimation algorithms for lithium battery State-of-Charge (SOC) and State-of-Health (SOH); plug-and-play communication protocol adaptation modules for heterogeneous multi-source energy equipment; and an edge-side lightweight EMS platform. The company holds six authorized invention patents, 19 utility model patents, and 14 software copyrights. It has passed third-party testing by China Electric Power Research Institute (CEPRI) (Test Report No.: CEPRI-TEST-2024-EN0883).  

The company holds the following qualifications: Grade III General Contracting Qualification for Electric Power Engineering Construction; License for Installation (Maintenance/Testing) of Electric Power Facilities (Grade IV for Installation, Grade IV for Testing); and ISO 9001/14001/45001 integrated management system certifications. It has established the Liaoning Provincial Enterprise Technology Center (certified under Document No. Liao Xin Gong Fa [2022] 187 issued by the Liaoning Provincial Department of Industry and Information Technology).  

Representative projects include: (1) the comprehensive energy retrofit project for Dalian Ice Mountain Group in 2023—featuring combined cooling, heating, and power (CCHP) plus energy storage—with a total investment of RMB 120 million and annual peak-shaving and valley-filling electricity volume of 18.6 GWh; and (2) the 12 MW / 24 MWh user-side energy storage peak-shaving project at Hengli Petrochemical Park, selected in 2024 for the demonstration project list issued by the Liaoning Provincial Energy Administration.  

Public records indicate no foreign direct investment, international engineering contracting experience, or overseas subsidiaries. Its current business operations are confined to China’s Bohai Rim Economic Circle. Cooperative models include EPC general contracting, technology licensing plus engineering implementation, customized development of intelligent energy platforms, and full-lifecycle operation & maintenance (O&M) outsourcing.

Dalian Tonghui Construction Co., Ltd., located in Ganjingzi District, Dalian City, Liaoning Province, is a medium-sized private construction enterprise whose core businesses are building construction and municipal public works. The company is currently in a stable operational phase with deep regional market penetration. Its registered capital is RMB 50 million, and its registration status is “in existence.” The company’s primary business focuses on public infrastructure construction and livelihood improvement projects. In chemical industry–related contexts, it can undertake supporting infrastructure for petrochemical parks (e.g., plant roads, pipe rack foundations, pump stations, and electrical systems); environmental remediation supporting projects (e.g., civil construction and electromechanical installation for wastewater treatment plants); standardized factory building construction for new materials industrial parks; and architectural decoration, renovation, and new construction or retrofitting of steel-structure factory buildings for technological upgrading projects at chemical enterprises. Its core competencies lie in full-process construction management for building engineering and municipal public works, possessing integrated delivery capabilities spanning foundation treatment, main structural construction, architectural decoration, and electromechanical equipment installation. It is capable of executing construction of small- to medium-scale process-supporting facilities—including pump stations, pipeline networks, and power transformation and distribution systems. Over the past three years, the company has won bids for 27 projects, with a cumulative contract value of approximately RMB 480 million. Representative projects include the Expansion and Renovation Project of Dalian Yingchengzi Central Primary School (RMB 52.18 million), the EPC Project for the Renovation of Old Residential Communities in Jinhua New Area (RMB 96.32 million), and the Construction Project of Land-Based Supporting Facilities for Zhuanghe Marine Ranch (RMB 38.41 million). All projects have been completed on schedule, with no quality complaints or schedule breaches recorded. Regarding qualifications, the company holds Grade II General Contracting Qualifications for Building Engineering and Municipal Public Works, Grade II Specialized Contracting Qualifications for Steel Structure Engineering and Architectural Decoration and Renovation Engineering, as well as Ungraded Construction Labor Qualification—all duly filed and valid on the “National Construction Market Regulation Public Service Platform.” Publicly available information does not indicate that the company holds specialized design qualifications for the chemical industry, special equipment permits for pressure pipelines/pressure vessels, ISO management system certifications, or chemical-sector invention patents. Its service coverage is concentrated in southern Liaoning Province, including the entire Dalian municipality (encompassing Jinhua New Area, Zhuanghe City, and Changxing Island) and parts of counties in Yingkou and Dandong cities. No overseas branches, records of foreign contracting project registration, or participation in Belt and Road Initiative projects have been disclosed. The company currently lacks experience adapting to international standards or engaging in cross-border consortium collaborations. Platform users may collaborate with the company on localized projects via subcontracting, specialized component cooperation, or participation as a member of an EPC consortium.

Dalian Songhua Development and Construction Co., Ltd. is a limited liability company registered in the Songmu Island Chemical Industry Park of Dalian Puwan New Area, specializing in real estate development and operation as well as integrated engineering construction services. Its core business encompasses real estate development, construction of residential buildings, municipal public works construction, landscape greening project implementation, property management, and leasing of self-owned properties. Leveraging local industrial resources and regional development needs, the company provides integrated construction solutions tailored to supporting infrastructure for chemical industry parks and urban renewal initiatives in surrounding areas. The enterprise holds business registration qualifications for both real estate development and engineering construction, with its operational chain covering pre-development planning, engineering implementation, and post-construction operation and service phases. Publicly verifiable information currently available indicates that the company is listed as “in operation” within the industrial and commercial registration system, with Dalian Songhua Group Co., Ltd. as its sole shareholder—reflecting a stable equity structure and localized operational foundation. Although no real estate development enterprise qualification certificate or construction enterprise qualification certificate issued by the housing and urban-rural development authorities has been identified to date, its registered business scope explicitly includes multiple engineering construction and development activities, thereby confirming its legal status and business orientation for conducting such activities. No public reports, representative project disclosures, or risk records concerning the company have appeared to date in mainstream media, industry platforms, or judicial credit systems; overall, it exhibits characteristics typical of a compliantly operated and steadily developing market entity. Targeting government platforms, industrial parks, industrial investors, and professional service providers, the company is open to collaboration in areas including residential and public facility construction supporting chemical industry parks, renovation and upgrading of existing assets, and park property services—supporting diverse cooperation models such as customized development, entrusted construction, and joint operations.

Dalian Petrochemical Engineering Co., Ltd., located in Ganjingzi District, Dalian City, Liaoning Province, is a state-owned specialized engineering technology service enterprise approved by the former Ministry of Chemical Industry and currently supervised by the State-owned Assets Supervision and Administration Commission of Dalian Municipal Government. The company has long focused on full-process engineering services in the petroleum, chemical, energy, and environmental protection sectors. It is categorized as an enterprise in the “high-end equipment manufacturing industry” and “integration of modern services,” both of which are prioritized for development by the Chinese government. The company possesses strong regional influence in niche areas including petrochemical engineering consulting and design, EPC general contracting, and intelligent operation & maintenance services. Its core business covers technical domains such as energy-saving optimization for fluid catalytic cracking units, highly efficient separation of sulfur-containing wastewater steam, and intelligent diagnostics for BOG compressor systems at LNG receiving terminals. Its service portfolio targets typical scenarios including large-scale integrated refining & petrochemical projects, supporting infrastructure for green petrochemical bases, and overseas refinery upgrading & retrofitting projects. Clients include key national projects such as PetroChina Liaoyang Petrochemical Company, Hengli Petrochemical (Dalian) Co., Ltd., and Wanhua Chemical Yantai Industrial Park.  

The company holds Class-A qualifications for engineering design in the chemical, petrochemical, and pharmaceutical industries; Class-A credit rating for engineering consulting firms (petrochemical category); Special Equipment Pressure Pipeline Design Licenses (Categories GA/GC); Class-II qualification for general contracting of petrochemical construction projects; and a Work Safety Production License. It is certified under the ISO 9001, ISO 14001, and ISO 45001 management systems, and completed its re-evaluation for the GB/T 19001–2016 standard in 2023. It hosts the Liaoning Provincial Enterprise Technology Center and has obtained 47 authorized patents (including 12 invention patents). It led the formulation of the Liaoning Provincial Local Standard “Guidelines for Construction of Intelligent Operation & Maintenance Platforms in Petrochemical Enterprises” and participated in drafting three industry standards, including “Design Code for Safety Instrumented Systems in Chemical Plants.”  

Over the past three years, the company has secured over RMB 2.86 billion in contract value for EPC and EPCM projects. Representative delivered projects include: the EPC general contracting of the wastewater treatment plant supporting the Dalian Xizhong Island Green Petrochemical Base (capacity: 45,000 tons/day); detailed design and complete supply of the flare system for Hengli Petrochemical’s Changxing Island Integrated Refining & Petrochemical Project; and process package localization adaptation and HAZOP analysis support for the Atirau Refinery in Kazakhstan. The company does not operate overseas subsidiaries but extends its technological services to Belt-and-Road Initiative countries—including Kazakhstan, Uzbekistan, and Vietnam—through cooperative partnerships with domestic general contractors. In 2024, international business revenue accounted for approximately 6.3% of total revenue. The company offers specialized technical services including technology licensing combined with engineering implementation, joint-bid participation, localized adaptation, and dedicated services such as HAZOP/LOPA analysis.