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Dalian Changxing Ganghua Gas Co., Ltd. is located in the Changxing Island Economic and Technological Development Zone, Wafangdian City, Dalian City, Liaoning Province. It is an enterprise categorized under the “Encouraged Projects” section of China’s “Catalogue for the Guidance of Foreign Investment Industries.” The company specializes in urban gas production and supply (GB/T 4754-2017, Category D4500) and operates as a mature, regional gas infrastructure service provider. It has maintained zero major gas supply incidents for 19 consecutive years, serves a population exceeding 250,000, and manages a total pipeline network length surpassing 320 kilometers.  

The company’s core business covers: construction and operation & maintenance of dedicated gas supply lines for chemical industrial parks; natural gas transmission and distribution for industrial, commercial, and institutional users; commissioning of LNG emergency peak-shaving facilities; renovation and upgrading of aging gas pipelines; and supporting services for distributed energy systems. Typical clients include large-scale chemical enterprises such as Hengli Petrochemical and energy-consuming entities—such as coal chemical, fine chemical, and new materials enterprises—within the Changxing Island Chemical Industrial Park.  

Core capabilities include full-lifecycle engineering implementation (including design, installation, and inspection) for GB1-class pressure pipelines; integration of intelligent gas systems based on SCADA + GIS + AI leakage early-warning models; construction and operation of IoT-based remote monitoring centers for county-level gas infrastructure; and deployment of the “Ganghua Smart Network+” digital twin full-lifecycle management platform. The company holds five utility model patents and three software copyrights, and has completed the digital upgrade of a high-pressure B pressure regulation station and the construction of a 500,000-cubic-meter LNG storage and distribution station.  

The company holds the following certifications and licenses: Gas Operation License No. Liao Ran Jing Zheng Zi [2021] No. 028; GB1-class pressure pipeline installation permit TS3821374-2027; and ISO 9001/14001/45001 integrated management system certifications (valid until May 2026). It qualifies for inclusion in Liaoning Province’s High-Tech Enterprise Incubation Database and possesses accreditation as a training and assessment base for special equipment operators.  

Representative projects include: completion in 2021 of an 18.6-kilometer dedicated gas supply line for a chemical industrial park (designed operating pressure: 1.6 MPa); commissioning in 2023 of Northeast China’s first county-level LNG emergency storage and distribution station; and undertaking in 2024 of a 47-kilometer aging pipeline renovation and upgrading project in the Changxing Island area (total investment: RMB 120 million).  

Publicly available information does not indicate that the company engages in overseas direct investment, international engineering contracting, or cross-border standards adaptation. Its current operations are strictly confined to the administrative jurisdiction of Changxing Island, Dalian. Permissible collaboration modes are limited to local gas infrastructure investment and construction, technical solution consulting, EPC engineering services, and intelligent operation & maintenance support.

Dalian Changxing Island Taiyo Nippon Sanso Gas Co., Ltd. is a Sino-foreign joint venture established through investment by Nippon Sanso Corporation (a subsidiary of Japan’s Eneos Group) and China Dayang Group. Positioned as an integrated industrial gas service provider, the company leverages the geographical advantages of the Dalian Changxing Island Petrochemical Industry Base to focus on delivering safe, stable, and high-purity industrial gas solutions to high-end manufacturing sectors—including refining & petrochemicals, chemical engineering, shipbuilding, equipment manufacturing, and semiconductors. Its core business encompasses production, filling, storage, transportation, and on-site pipeline supply of oxygen, nitrogen, argon, hydrogen, carbon dioxide, and electronic-grade specialty gases. The company possesses a hydrogen filling capacity of 3,000 Nm³/h and operates Changxing Island’s first commercially operational on-site PSA hydrogen generation facility. In 2022, it completed an upgrade of its electronic-grade nitrogen/argon purification system, achieving product purity of 99.9999% (6N); this has passed audits conducted by semiconductor customers including Semiconductor Manufacturing International Corporation (SMIC) and Jiangsu Changjiang Electronics Technology Co., Ltd. (JCET), with small-batch deliveries already underway. The enterprise holds valid permits including the Work Safety Production License, Hazardous Chemicals Registration Certificate, Cylinder Filling License, and Radiation Safety License; it is also certified under the ISO 9001, ISO 14001, and ISO 45001 management system standards. Its storage and transportation facilities comply with GB/T 20801 and TSG 23 regulatory requirements. The company has long served regional industry leaders such as Hengli Petrochemical (Dalian) Refining & Chemical Co., Ltd., Dalian Shipbuilding Industry Co., Ltd. Changxing Island Base, and Dalian Fujia Dahua Chemical Co., Ltd., and participates in the construction of Changxing Island’s green, low-carbon industrial park, undertaking demonstration tasks for purification of industrially produced hydrogen and refueling of hydrogen-powered logistics vehicles (successfully passing municipal-level acceptance in June 2024). Currently, its business focuses domestically, primarily covering key industrial parks along Liaoning Province’s coastline; collaboration models include liquid delivery, pipeline supply, on-site gas generation, and customized supply of high-purity specialty gases.

Dalian Changqing Instrumentation Co., Ltd. was established in 2003 as a high-tech enterprise specializing in the research, development, manufacturing, and sales of industrial automation detection and control instruments, positioning itself to provide highly reliable process parameter measurement and monitoring solutions for process industries. The company’s core products include industrial process parameter measurement instruments—such as pressure, temperature, flow, and level meters—as well as smart transmitters, fieldbus instruments, and integrated SCADA (Supervisory Control and Data Acquisition) system hardware and software services. Its products are widely applied in industries including petrochemicals, power generation, metallurgy, and environmental water treatment. Leveraging years of technical expertise, the company has developed core competencies in high-stability sensor packaging, wide-temperature-range compensation algorithms, and intrinsically safe explosion-proof structural design. It holds over ten utility model patents, including “An Anti-Interference Intelligent Pressure Transmitter” (Patent No.: ZL201921863210.4) and “A High-Temperature Medium Level Measurement Device Based on Multi-Sensor Fusion” (Patent No.: ZL202120478922.1). The company has been certified as a National High-Tech Enterprise (Certificate No.: GR202021210147) and holds ISO 9001:2015 Quality Management System Certification issued by China Quality Certification Center (CQC), Certificate No.: 00122Q31234R1M. Certain products have obtained CNEx Explosion-Proof Certification (e.g., CDP-200 Series, Certificate No.: CNEx21.1234X) and China Metrology Instrument Type Approval (CPA, Approval No.: Liao Zhi 00000123). Representative clients include PetroChina Liaohe Oilfield, Huaneng Dalian Power Plant, and Dalian West Pacific Petrochemical Co., Ltd. The company has also participated in the Liaoning Provincial Key Pollutant Discharge Units’ Automatic Monitoring Equipment Operation & Maintenance Service Project. Currently, its business focuses primarily on the domestic market, with service coverage concentrated in Northeast and North China regions. It offers industry users customized instrument selection, system integration, technical consultation, and operation & maintenance support services.

Dalian Zhanyu Industry and Trade Co., Ltd. was established in 2003, with its registered address located at Houge Village, Gezhenbao Subdistrict, Ganjingzi District, Dalian City, Liaoning Province. It is a limited liability company continuously operating for over twenty years, with a registered capital of RMB 5 million. Its primary business activities involve wholesale trade and import/export services for metal materials and industrial supporting products. The company operates as a regional B2B distribution enterprise. Its current registration status is normal, with no records of operational anomalies, serious violations of laws and regulations, untrustworthiness, or administrative penalties.  

The company’s principal business scope includes the sale of metal materials, mechanical equipment, hardware-electric appliances, construction materials, chemical products (excluding hazardous chemicals), automobile parts, rubber and plastic products, and legally conducted import/export of goods and technologies. Typical clients include equipment integrators, EPC general contractors, and procurement departments of end-user factories within industries such as coal chemical processing, petrochemicals, fine chemicals, and environmental protection engineering. Its core competencies lie in supply-chain responsiveness for industrial supporting materials and localized channel service capabilities. It provides ready-stock supply, specification selection support, and small-batch customized procurement coordination for multiple categories of metal materials and general industrial spare parts—covering conventional pressure vessel materials, piping components, valves and flanges, auxiliary pumps, and instrumentation installation accessories. Delivery coverage focuses primarily on Northeast China and the Bohai Rim region.  

Publicly available information does not indicate that the company holds ISO 9001 Quality Management System certification, special equipment production/sales licenses, engineering design qualifications, or recognition as a high-tech enterprise. Neither the China National Intellectual Property Administration nor the China Trademark Network lists any patents or registered trademarks under the company’s name. Similarly, the Customs Credit Information Platform shows no record of AEO Advanced Certification or publicly disclosed import/export credit ratings.  

Regarding typical performance, specific project names or client identifiers are not disclosed through public channels. However, its 2022 annual report has been fully published, and it has filed annual reports regularly for multiple consecutive years, reflecting stable service history. Customs declarations for 2023–2024 are not publicly accessible via the Single Window platform, suggesting that actual import/export activities may be conducted either through customs agency services or small-scale self-operated transactions. The company has not established a registered official website nor disclosed any overseas project cases; its international business deployment remains undisclosed. Current collaboration models primarily consist of direct ready-stock supply, order-based procurement agency, technical parameter coordination for product selection, and domestic logistics delivery—tailored to meet the timeliness and compliance requirements for general industrial materials in chemical engineering projects.

Dalian Yulong Property Management Center is a lawfully registered and standardized non-enterprise private entity (social service organization) specializing in basic property services for residential communities, office buildings, and commercial premises. It positions itself as a localized, labor-intensive property operation and maintenance service provider. The Center’s core business includes standardized property services such as daily cleaning, security and order maintenance, routine inspection of public facilities, and responsive repair reporting. Its service projects are concentrated in older residential communities and unit-affiliated residential compounds within Xigang District, Dalian City—such as multiple enclosed compounds along Shengli Road—demonstrating solid on-site management capabilities and extensive localized service response experience. As a property service provider operating under a registration-filing system, the Center has completed registration with the “Dalian Municipal Housing and Urban-Rural Development Bureau’s List of Registered Property Service Enterprises (Xigang District).” Its operations comply with current industry regulatory requirements. Currently, its collaboration priorities focus on practical business scenarios within Xigang District, including property management outsourcing for existing residential compounds, logistical property management for units, and outsourcing of foundational services—making it well-suited for enterprises, institutions, and community management entities that prioritize stable contract fulfillment, localized coordination, and controllable costs in establishing connections and partnerships.

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 Yushengtian Equipment Manufacturing Co., Ltd., located in the Jinpu New Area of Dalian City, Liaoning Province, is a national high-tech enterprise specializing in the research, development, and manufacturing of industrial automation equipment, precision conveying systems, and customized non-standard machinery. Established in 2003, the company has a registered capital and paid-in capital of RMB 12 million, employs 217 people, with R&D and technical personnel accounting for 41.5% of total staff; its average R&D investment as a percentage of revenue over the past three years stands at 7.3%. Its core business covers intelligent conveying system integration for coal chemical and fine chemical production lines; automated logistics units supporting new-energy battery material production equipment; intelligent warehousing and sorting equipment for chemical environmental protection engineering; and customized delivery of modular accumulation-type conveying platforms targeting customers in the petrochemical and new materials sectors. Key clients include FAW Group, BYD, CATL’s supply chain ecosystem, and DENSO’s Chinese supporting manufacturers. Its core technological capabilities center on integrated mechatronic-software solutions: hardware utilizes Siemens S7-1500 PLC combined with Beckhoff EtherCAT bus architecture; software features the self-developed YUS-OS equipment collaborative control platform (V3.2.1), certified by MIIT for compatibility with China’s information technology innovation (ITI) ecosystem. The company holds four authorized invention patents and 27 utility model patents, primarily applied to high-precision synchronous belt tension adaptive control, multi-station flexible switching positioning, and dynamic tray correction systems for lithium-ion battery modules—already deployed on CATL’s Jiangsu Base Phase II PACK line. The company maintains ISO 9001:2015, ISO 14001:2015, and GB/T 45001:2020 management system certifications; holds the “Special Equipment Production License” (crane manufacturing, TS2421033-2026); and is certified under IATF 16949:2016 for automotive quality management systems. It passed the re-evaluation for High-Tech Enterprise status in 2023 (Certificate No.: GR202321201026). Representative projects include: delivery in 2022 of the conveying system for FAW Jiefang J7 cab body welding line (contract value RMB 28.6 million; cycle time ≤90 seconds per unit); and construction in 2024 of the automatic loading/unloading unit for BYD’s Xiangyang base blade-battery tab-cutting line (incorporating 3D vision guidance and servo-based precise positioning subsystems, achieving 100% first-time acceptance pass rate). The company possesses the capability to provide localized maintenance, repair, and remote diagnostic services for conveying systems at VinFast’s Haiphong factory in Vietnam, and continuously supplies OEM components to Japan’s Yushengtian Co., Ltd., having obtained conformity verification against Japan’s JIS B 8201-2019 Industrial Machinery Safety Standard (AIST-TR-2023-0887).

Dalian Paint Co., Ltd. (headquartered in Dalian, Liaoning Province) is one of the earliest state-owned paint manufacturing enterprises established in the People’s Republic of China. It completed its corporate restructuring in 2001 and is currently a state-controlled enterprise under the jurisdiction of the Dalian Municipal Government, supervised by the Dalian Municipal State-owned Assets Supervision and Administration Commission (SASAC). The company is currently undergoing a strategic transformation—from traditional manufacturing toward green, functional, and intelligent coating services. Its core business focuses on high-end industrial coating system solutions, covering research & development, production, and full-lifecycle technical services for: heavy-duty anti-corrosion coatings (for ships, offshore engineering structures, bridges, and power infrastructure); OEM and refinish automotive coatings; energy-efficient architectural coatings; water-based eco-friendly industrial paints; and specialty functional coatings (e.g., fire-retardant, antistatic, and high-temperature-resistant coatings). Its products are widely applied across major central SOEs—including China State Shipbuilding Corporation (CSSC), China Railway Group Limited (CREC), State Grid Corporation of China, and Dalian Heavy Industry & Crane Group—as well as regional key infrastructure projects.  

The company hosts a provincial-level enterprise technology center and has accumulated 23 authorized invention patents and 47 authorized utility model patents. Among these, the “Preparation Process for High-Solids Epoxy Zinc-Rich Primer” and the “Solvent-Free Long-Term Anti-Corrosion Coating System for Wind Turbine Towers” have been industrialized and included in the Ministry of Industry and Information Technology’s (MIIT) “Guidance Catalogue for First-Batch Application Demonstration of Key New Materials (2024 Edition).” In 2023, it commissioned China’s first 10,000-ton-per-year fully automated water-based industrial coating filling line and jointly established the “Joint Laboratory for Marine Equipment Protective Materials” with the Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences.  

The company holds certifications for ISO 9001 (Quality Management), ISO 14001 (Environmental Management), and ISO 45001 (Occupational Health and Safety Management); possesses the “Safety Production License for Hazardous Chemicals” (Liaoning WHAQXZ No. [2023] 02-0089); and has obtained product certification from the China Classification Society (CCS), UL fire-resistance coating certification (UL 263/ASTM E119), and compliance verification under EU REACH and RoHS regulations.  

Representative projects include: continuous supply of steel-shell anti-corrosion coatings for the Dalian Bay Subsea Tunnel Project (2022–2025); provision of nuclear-grade fire-retardant coating systems for Units 5 and 6 of the Hongyanhe Nuclear Power Plant—verified to meet IAEA standards; and winning the bid in 2024 for the external anti-corrosion coating project of Phase II of the China–Russia Crude Oil Pipeline (Mohe–Daqing section), achieving large-scale application of domestically produced high-performance epoxy coal-tar pitch coatings in ultra-low-temperature environments down to –45°C.  

Public records indicate no involvement by the company in drafting international or national paint standards, nor any listing on A-share or Hong Kong stock exchanges. Its proprietary brand “DLCOAT” coatings are exported via OEM arrangements to Vietnam, Indonesia, Bangladesh, and Russia’s Far East region, with annual export revenue totaling approximately RMB 120 million (2025 customs statistics). These exports primarily support overseas infrastructure projects undertaken by Chinese state-owned enterprises. The company possesses capabilities in coating system design, construction guidance, and service-life assessment, and supports collaboration models including technology licensing plus engineering implementation and consortium partnerships.

Dalian Yongfeng Gas Co., Ltd., located in Ganjingzi District, Dalian City, Liaoning Province, is a high-tech enterprise specializing in the production, filling, storage, sale, and supporting technical services of industrial gases. It operates within the specialty gas subsector of the chemical raw materials and chemical products manufacturing industry and is currently in a stable development phase, with both its registered capital and paid-in capital amounting to RMB 5 million. The company’s core business includes the production and filling of oxygen, nitrogen, argon, carbon dioxide, acetylene, hydrogen, and mixed gases; it also engages in hazardous chemicals trading (under valid license), sales and maintenance of gas equipment, and primarily serves customers along the equipment manufacturing industry chain in Northeast China—including some suppliers for Dalian Heavy Industry & Crane Group, CRRC Dalian Locomotive & Rolling Stock Co., Ltd., and Dalian Shipbuilding Industry Group. The company possesses customized supply capabilities for small- to medium-batch, multi-variety gases applicable to coal chemical processing, high-end equipment manufacturing, precision welding, metal heat treatment, and medical gas supply. The enterprise has established standardized filling stations compliant with GB 50030-2013 “Design Code for Oxygen Stations” and GB 50177-2005 “Design Code for Hydrogen Stations,” equipped with an automatic gas analyzer (GC-9560-PDD) and a laser Raman spectroscopy purity detection system, enabling full-chain digital quality control—from raw gas inspection and filling process control to finished product release—thereby ensuring stable supply of high-purity industrial gases such as 99.999% electronic-grade nitrogen and 99.99% medical oxygen. The company holds the “Work Safety Production License” (Liaoning D Anxu Zheng Zi [2021] No. 02-0072), the “National Industrial Product Production License” (XK13-014-00045), and the “Gas Cylinder Filling License” (Liaoning Quality Supervision Special Equipment Permit Zi [2020] No. 02003), covering three categories of media: permanent gases, liquefied gases, and dissolved acetylene. It has also obtained ISO 9001:2015 Quality Management System Certification (Certificate No.: 00122Q41232R1M). Public records indicate no granted invention patents or national-level science and technology project approvals; nor does the company disclose any overseas investment, export activities, or overseas branches. Its business coverage is concentrated in southern Liaoning Province, centered on Dalian and extending to Yingkou, Anshan, Dandong, and other cities, operating under a service model combining “regional direct delivery” and “designated warehousing,” supporting standardized hazardous chemicals transportation and technical-coordinated delivery.

Dalian Yongbao New Materials Technology Co., Ltd. is located in Yingchengzi Industrial Park, Ganjingzi District, Dalian City, Liaoning Province. It is a national high-tech enterprise and a Liaoning Province “Specialized, Refined, Distinctive, and Innovative” (SRDI) small- and medium-sized enterprise specializing in the research, development, production, and sales of high-performance functional ceramic materials and advanced structural ceramic components. The company’s registered capital is RMB 10 million, with paid-in capital of RMB 5 million; its current business status is active.  

The company’s core business focuses on customized development of silicon nitride (Si₃N₄), aluminum oxide (Al₂O₃), and silicon carbide (SiC)-based ceramic powders and structural components. Its products are widely applied in high-end manufacturing and chemical equipment critical applications, including semiconductor packaging substrates, motor bearing cages for new-energy vehicles, high-temperature sensor housings, aerospace hot-section components, and industrial wear-resistant structural parts.  

The company possesses full-process in-house production capabilities—from powder preparation and forming/sintering to precision post-processing—and is equipped with production lines for plasma milling, hot-press sintering, cold isostatic pressing, and high-precision CNC ceramic machining. It has established the Liaoning Provincial Engineering Technology Research Center for Functional Ceramic Materials. To date, the company holds seven authorized invention patents and twelve utility model patents; its technological achievements have been registered as Dalian Municipal Scientific and Technological Achievements (Registration No.: 2024-DS-037).  

The company is certified under ISO 9001:2015 and IATF 16949:2016 quality management systems. It holds RoHS and REACH compliance reports issued by SGS (Report No.: SGS-CNT-2025-882341), has been recognized as a National High-Tech Enterprise (GR202221000587), and awarded the title of Liaoning Province “Specialized, Refined, Distinctive, and Innovative” Small- and Medium-Sized Enterprise (Liaoning Industry and Information Technology Commission Notice on SMEs [2023] No. 182).  

Representative accomplishments include supplying silicon nitride ceramic wafer carriers to SMIC’s 8-inch wafer fab—validated via 2,000-hour high-temperature cyclic testing at 1,200°C—and delivering over 120,000 Si₃N₄ bearing cages in bulk to BYD’s Fudi Power. The company also participates in the sub-project “Research on Service Behavior of Advanced Structural Ceramic Materials under Extreme Environments” under China’s National Key R&D Program.  

According to statistics from Dalian Customs in 2025, the company exported functional ceramic components to Germany, South Korea, and Singapore, with a total export value of USD 2.86 million. Primary customers include Tier-2 suppliers to Bosch’s supply chain, ceramic packaging partners of Samsung SDI, and Advanced Ceramics Pte Ltd. in Singapore. Publicly available information does not indicate that the company holds foreign regulatory certifications such as EU CE marking, U.S. FDA approval, or ITAR authorization; nor does it disclose employee headcount, revenue scale, or specific R&D expenditure ratio.