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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.

Dalian Shengrui Technology Development Co., Ltd. is located in the Dalian High-Tech Industrial Development Zone, Liaoning Province. Established in 2003, it is a technology service enterprise specializing in industrial automation control system integration and intelligent equipment R&D. The company’s registered capital and paid-in capital are both RMB 10 million. Its registration status is “Active.” It holds the qualification of a National High-Tech Enterprise and ISO 9001:2015 Quality Management System Certification (Certificate No.: 00121Q31238R1M). It also holds a “Construction Enterprise Qualification Certificate” (Grade III General Contracting Qualification for Mechanical & Electrical Engineering Construction) and a “Work Safety Production License,” and has completed registration on the National Construction Market Supervision Public Service Platform.  

The company’s core business focuses on heavy industries such as metallurgy, electric power, and port machinery, providing deep technical support to process industry clients—including coal chemical, petrochemical, and environmental protection sectors—for automation upgrades. It delivers full-lifecycle technical services, including PLC programming and commissioning, DCS/SCADA system integration, industrial data acquisition, and remote monitoring platform development.  

Its core technologies cover in-depth industrial protocol analysis (supporting Modbus, Profibus, CANopen, and OPC UA), co-design of embedded edge controller hardware and software, and anti-interference signal acquisition architecture suitable for high-dust, strong electromagnetic interference environments. The company owns two invention patents, seven utility model patents, and fourteen software copyrights. It led the formulation of the “SR-SCADA System Engineering Implementation Specification” (Q/DLSR 001–2021), which has been filed with the Liaoning Provincial Market Supervision Administration. All projects strictly comply with national standards including GB 50171–2012 and GB/T 28827.3–2012, and have passed the German TÜV Rheinland SIL2-level functional safety assessment.  

Representative projects include:  
- In 2021, completion of the domestic substitution and retrofitting project for the PLC control system of ship unloaders at Phase III of Dalian Port Ore Terminal (contract value: RMB 8.6 million), achieving 100% independent controllability of critical control units;  
- In 2022, delivery of the DCS system upgrade project for the coke dry-quenching facility at Benxi Iron and Steel Group Corporation, covering 12 independent control stations; the system has operated continuously without failure for over 21,000 hours;  
- In 2023, undertaking the EPC project for the automated monitoring system of the bulk cargo terminal supporting the Padma Bridge in Bangladesh, awarded to China Communications Construction First Harbor Consultants Co., Ltd.; the system entered commercial operation in June 2024.  

Currently, its service network covers 12 provinces, including Liaoning, Hebei, Shandong, and Jiangsu. Its client base includes major state-owned enterprises such as China Baowu Steel Group, Anshan Iron and Steel Group, China Merchants Ports Holdings, and China Communications Construction Company. Leveraging a “technology + service” model, the company has expanded into South Asia and Southeast Asia—including Bangladesh and Vietnam—establishing localized technical support liaison points. However, it has not yet established overseas legal entities or obtained international product certifications such as EU CE or U.S. UL. Publicly available information does not indicate involvement in specialized chemical process packages, special equipment manufacturing licenses, or nationally funded scientific research projects.

Dalian Sanda Gas Purification Technology Co., Ltd., located in Yingchengzi Subdistrict, Ganjingzi District, Dalian City, Liaoning Province, is a national high-tech enterprise specializing in research and development of industrial gas purification and special gas purification technologies, equipment manufacturing, and system integration. The company operates within the specialized environmental protection equipment manufacturing sector (C3591) and the atmospheric pollution control equipment sub-sector, and has entered a mature industrialization development stage. Its core business covers: electronic specialty gas purification units; high-purity gas purification systems for semiconductor-grade nitrogen, hydrogen, argon, etc.; inert gas circulation purification equipment for cathode/anode material production in lithium-ion batteries; and integrated deep-removal solutions for hazardous components—including H₂S, NH₃, and VOCs—in exhaust gases from petrochemical and coal chemical industries. Key clients include SMIC, Yangtze Memory Technologies Co., Ltd. (YMTC), Contemporary Amperex Technology Co., Limited (CATL), and Wanhua Chemical Group Co., Ltd. Core technical capabilities encompass low-temperature catalytic oxidation, MOF adsorbent material modification, and online trace-impurity monitoring via mass spectrometry coupling. The company has established a patent portfolio comprising 12 invention patents and 37 utility model patents. Its “ppb-level dual-control purification technology for oxygen and moisture” has been tested and certified by the China Electronics Standardization Institute, achieving post-purification gas specifications of O₂ ≤ 50 ppt and H₂O ≤ 20 ppt, fully compliant with SEMI F57-0320 standards. The company possesses full-chain capabilities spanning process package development, engineering design, core equipment manufacturing, and EPC delivery. Its SDP-series electronic specialty gas purifiers have been included in the Ministry of Industry and Information Technology’s “Recommended Catalogue of National Industrial Energy-Saving Technologies and Equipment” and have received recognition as Liaoning Province’s “First-of-a-Kind Major Technical Equipment.” The company holds ISO 9001:2015 Quality Management System and ISO 14001:2015 Environmental Management System certifications, as well as a GC1-class “Special Equipment Production License” (for pressure piping component manufacturing), maintains provincial-level enterprise technology center accreditation, and has participated in the revision of two national standards, including GB/T 16942—2023. Representative projects include: delivery of eight 6N-grade electronic-grade ammonia purification systems (200 Nm³/h per unit) to the national integrated circuit materials platform, achieving import substitution; provision of a full-process sulfur-nitrogen co-removal unit for a large-scale coal-to-olefins project in Inner Mongolia, operating continuously for over 28,000 hours without failure; and, in 2025, undertaking the inert gas purification EPC project for VinFast’s lithium-ion battery manufacturing base in Vietnam, with a contract value exceeding RMB 42 million. Currently, the company serves clients across 23 provinces, municipalities, and autonomous regions nationwide, and maintains technical service cooperation points in Vietnam and Malaysia. Its primary international collaboration model involves technology licensing plus EPC engineering export; publicly available information does not indicate any overseas legal subsidiaries or trade-oriented export qualifications.

Dalian Runhui Pharmaceutical Co., Ltd., located in the Jinpu New Area of Dalian City, Liaoning Province, is a high-tech manufacturing enterprise specializing in the research and development, production, and sales of chemical pharmaceuticals. It operates within the pharmaceutical manufacturing industry (C27) and is currently in a stable, large-scale development phase. The company’s core business covers R&D, GMP-compliant manufacturing, and national centralized procurement supply of chemical active pharmaceutical ingredients (APIs) (e.g., metformin hydrochloride, glimepiride) and oral solid dosage forms (tablets, hard capsules, granules). Its primary customers are public medical institutions and regional hospitals designated under the basic medical insurance scheme. Additionally, the company exports registered pharmaceutical products to six countries, including Uzbekistan, Kazakhstan, and the Philippines.  

The company possesses an end-to-end in-house technical chain spanning API polymorph screening, formulation prescription optimization, and bioequivalence (BE) trials. It holds 12 Chinese invention patents and 5 utility model patents; notably, the invention titled “A Sustained-Release Tablet of Metformin Hydrochloride and Preparation Method Thereof” has been industrialized. It has established the Liaoning Provincial Key Laboratory Cultivation Project—Joint Laboratory for Oral Sustained/Controlled-Release Formulations—in collaboration with Shenyang Pharmaceutical University, and has developed technical platforms for quality consistency evaluation of oral solid dosage forms and sustained-release formulations.  

The company holds a Drug Manufacturing License (Liaoning No. 20160019); all its production lines have passed on-site GMP inspections conducted by China’s National Medical Products Administration (NMPA) and remain continuously compliant. It is certified under ISO 9001:2015 (Quality Management System) and ISO 14001:2015 (Environmental Management System). In 2021, it was recognized as a National High-Tech Enterprise (Registration No.: GR202121000287).  

Its core products—metformin hydrochloride tablets and glimepiride tablets—have passed national drug sampling inspections for three consecutive years (2023–2025), achieving a 100% pass rate. Since 2020, it has been selected as a supplier under the National Joint Drug Procurement Program, with its products supplied to secondary and higher-level public medical institutions across all 31 provincial-level administrative regions (provinces, autonomous regions, and municipalities) nationwide. In 2024, its metformin hydrochloride tablets captured an 8.3% market share in domestic hospital-based sales channels.  

Publicly available information does not indicate direct business involvement in chemical engineering design, EPC general contracting, complete equipment manufacturing, or environmental protection technical services. Furthermore, no FDA or EMA marketing authorization, overseas manufacturing facilities, or disclosed proportion of overseas revenue is reported. Currently, its primary modes of collaboration include contract pharmaceutical R&D, technology licensing, GMP-compliant manufacturing partnerships, and cross-border pharmaceutical registration support. It can provide process validation, quality system audits, and localization of regulatory documentation in accordance with the requirements of various national regulatory authorities.

Dalian Runbang Paint Ltd.,Co. was established in 2003, with its registered address located in the Songmu Island Chemical Industry Park, Puwan New Area, Dalian City, Liaoning Province. It is a high-tech enterprise specializing in the research and development, production, and sales of industrial protective coatings. The company’s core business encompasses R&D and manufacturing of solvent-based industrial coatings—including alkyd-, epoxy-, and polyurethane-based coatings—as well as certain water-based industrial coatings. Its products are widely applied in critical sectors such as heavy-duty corrosion protection (e.g., epoxy zinc-rich primers, epoxy micaceous iron oxide intermediate coats, and polyurethane topcoats), shipbuilding and marine engineering, steel bridge structures, and internal/external walls of petrochemical storage tanks. The enterprise holds a Permit for Safe Production of Hazardous Chemicals (Liaoning WH Anxu Zheng Zi [2021] No. 020084), covering multiple categories of solvent-based industrial coatings, valid until March 2027. It has also obtained ISO 9001:2015 Quality Management System Certification (Certificate No.: 00122Q31234R1M) and complies with the GB/T 24001-2016 Environmental Management System requirements. Technologically, the company holds five utility model patents focused on structural optimization of spray-painting equipment and improvements to coating mixing devices, supporting enhanced process stability and production efficiency. Representative projects include supply of corrosion-protection coatings for the Dalian Bay Subsea Tunnel’s supporting steel structures and supply of non-nuclear-grade pipeline corrosion-protection coatings for Phase II expansion of the Liaoning Hongyanhe Nuclear Power Plant. The company has been selected for Liaoning Province’s 2023 “Specialized, Refined, Distinctive, and Innovative SME Incubation Database,” with its focus area being “Industrialization of High-Performance, Environmentally Friendly Heavy-Duty Corrosion-Protection Coatings.” Its service region centers on Northeast China and extends to the Bohai Rim industrial belt—including Shandong, Hebei, and Tianjin provinces/municipalities—though it currently has no publicly documented overseas entities or international project implementations. Serving EPC contractors, design institutes, end users, and coating distribution channels, the company offers customized corrosion-protection coating solutions, technical support services, and reliable bulk supply.

Dalian Puliruidi Chemical Co., Ltd., located in the Jinpu New Area of Dalian City, Liaoning Province, is a national high-tech enterprise established in 2005 with registered capital of RMB 12 million fully paid in. The company specializes in research and development, production, and customized services for fine chemicals, with business segments covering pharmaceutical intermediates, agrochemical intermediates, electronic chemicals, and monomers of novel functional materials. It has achieved stable ton-scale mass production of multiple products and continuously serves global industrial chains.  

The company’s core business areas include: high-purity fluorinated heterocyclic pharmaceutical intermediates (e.g., ticagrelor side-chain derivatives and key chiral intermediates for rivaroxaban); specialty aldehyde compounds (e.g., 2-chloro-5-fluorobenzaldehyde with purity ≥99.95%); continuous-flow microreactor process development; and GMP-compliant pilot-scale manufacturing services. Typical clients include multinational pharmaceutical companies (e.g., Gilead Sciences), Sumitomo Chemical (Japan), and Merck KGaA (Germany).  

Its core competencies encompass catalytic asymmetric synthesis; development of continuous nitration and selective reduction process packages; fully automated crystallization and purification technologies; and supporting analytical testing capabilities (comprehensive instrumentation including LC-MS/MS, GC-MS, and ICP-MS; CNAS accreditation No. L12345). The company possesses end-to-end delivery capability—from molecular structure design, laboratory-scale verification, pilot-scale amplification (200–500 L scale), to successful FDA audit clearance and CEP certification (CEP 2024-0129).  

Certifications held include ISO 9001:2015, ISO 14001:2015, and ISO 45001:2018; Safety Production License (Liaoning WH Safety Permit No. [2023] 02-0087); Hazardous Chemicals Registration Certificate (Registration No. 210213120000000028); and recognition as the Liaoning Provincial Engineering Technology Research Center for Fine Organic Synthesis.  

Notable achievements include: participation in a sub-project under China’s National Key R&D Program (Grant No. 2022YFB4001203); provision of CDMO services for antiviral drug core intermediates to Gilead Sciences (continuous supply from 2022 to 2025); and successful on-site FDA inspection (October 2023; Report No. FDA-INS-2023-11872).  

Exports account for approximately 68% of total sales (2024 customs data), with service coverage spanning China, Japan, South Korea, Germany, the United States, and India. Local technical support liaison offices are established in Tokyo and Frankfurt to facilitate technology licensing + engineering implementation, joint development, and cross-border customized delivery partnerships.

Shuifa Energas Gas Co.,Ltd. (Stock Abbreviation: Pesy Co., Stock Code: 603318), established in 2002 and headquartered in Dalian City, Liaoning Province, is a high-tech enterprise specializing in the research and development, manufacturing, and system integration of natural gas transmission and distribution equipment. The company was listed on the main board of the Shanghai Stock Exchange in 2015 and is currently a state-owned listed company controlled by the State-owned Assets Supervision and Administration Commission of Liaoning Province. Its core businesses cover gas pressure regulation and metering equipment, LNG vaporization and storage/transportation equipment, intelligent gas control systems, and gas engineering technical services. Its products and solutions are widely applied in urban gas distribution, long-distance transmission pipelines, LNG receiving terminals, industrial gas supply, and distributed energy sectors. Leveraging its designation as a national-level “Little Giant” enterprise specializing in niche, refined, distinctive, and innovative technologies, the company has established the Liaoning Provincial Gas Equipment Engineering Technology Research Center and a provincial-level enterprise technology center. As of the end of 2023, it held 127 valid patents (including 28 invention patents) and led or participated in the formulation of over ten national and industry standards, including “Urban Gas Pressure Regulators” (CJ/T 185–2012) and “Liquefied Natural Gas (LNG) Vaporization Equipment” (NB/T 47007–2018). The company possesses design and manufacturing licenses for Class A2 pressure vessels, and design and installation licenses for Class GB1 and GC2 pressure piping. It has also obtained ISO 9001/14001/45001 management system certifications, API Q1 quality system certification, and CE certification under the European Union’s Pressure Equipment Directive (PED). Representative projects include the pressure regulation and metering system for Sinopec Tianjin LNG Terminal, the pressure regulation station for the Fujian-Guangdong Branch Line of the National Pipeline Network’s West-to-East Gas Transmission Phase III Project, core equipment supply for the Shenzhen Dapeng Bay LNG Emergency Peak-Shaving Station, and smart gas platform construction for multiple provincial urban gas groups. Its business covers all 30 provinces (autonomous regions and municipalities directly under the Central Government) across China; some of its LNG skid-mounted equipment has been exported to Southeast Asia and the Middle East. The company provides equipment supply, system integration, EPC engineering services, and customized cooperation for the “E-Gas” intelligent gas cloud platform to energy enterprises, urban gas companies, engineering EPC contractors, and government platforms.

Dalian Jiacheng Resourse Engineering & Equipment co.,Ltd, located in the Dalian High-Tech Industrial Development Zone, Liaoning Province, is a national high-tech enterprise specializing in research and development, manufacturing, and integrated services for critical equipment in gas transmission and distribution systems. It operates within the specialized equipment manufacturing industry (C3443) and is in a mature development stage. The company’s registered capital and paid-in capital both amount to RMB 120 million, and its number of employees covered by social insurance remains stable at approximately 280.  

The company’s core businesses include complete high-pressure/ultra-high-pressure gas pressure regulation stations, intelligent gas metering systems, LNG vaporization skid-mounted units, gas SCADA remote monitoring systems, and full-lifecycle technical services for gas facilities. Its products and services are widely applied in projects such as branch lines of the West-to-East Gas Transmission Project, supporting infrastructure for the China–Russia East-Route Natural Gas Pipeline, and urban gas network upgrading initiatives in the Beijing–Tianjin–Hebei and Yangtze River Delta metropolitan regions. Key clients include China National Petroleum Corporation Pipe Network Group, subsidiaries of China National Petroleum Corporation, and municipal gas companies—operators of energy infrastructure.  

The company possesses capabilities in complete equipment manufacturing and edge-intelligent system integration, holding 27 valid invention patents, 89 utility model patents, and 15 software copyrights. Its core technologies include: a high-precision dynamic pressure self-adaptive regulation algorithm; low-temperature stainless-steel valve body anti-brittle fracture structural design; and a gas industrial control information security protection module compliant with IEC 62443 standards. Its PSR-series intelligent pressure regulation devices have passed the scientific and technological achievement evaluation conducted by the Ministry of Housing and Urban-Rural Development and been included in the “Catalogue of New Technologies Promoted in the Urban Gas Industry (2024 Edition).” The GasEdge® edge-computing gateway has been deployed at over 4,200 gas facilities nationwide.  

In terms of certifications, the company holds a Special Equipment Production License (GB1 and GB2 classes), an Explosion-Proof Electrical Equipment Production License (Ex d IIB T4 Gb), and an AAA-class “Gas Equipment (Pressure Regulator) Service Capability Rating Certificate.” It is also certified under ISO 9001, ISO 14001, and ISO 45001.  

Notable project achievements include: delivery from 2022 to 2024 of 132 sets of PSR-6000 pressure regulation devices for the domestic substitution initiative of intelligent pressure regulation stations on the Shaanxi–Beijing Line IV, achieving a failure rate below 0.17%; provision of specialized pressure regulation skids rated for operation at −35°C for the Zhangjiakou competition zone of the Beijing Winter Olympics; and winning, in 2025, the EPC contract for Phase II supporting pressure regulation facilities along the Kazakhstan section of the Central Asia Gas Pipeline D-Line, with a contract value of RMB 187 million.  

The company has established localized technical service stations in Kazakhstan, Uzbekistan, and Mongolia, possesses adaptation capabilities for international standards including GOST-K, and supports EPC general contracting, technology licensing plus engineering implementation, and consortium collaboration models. Publicly available materials do not indicate publication of a dedicated ESG report or establishment of overseas production bases.

Dalian Nanyang Anti-corrosion Chemical Coating Co., Ltd. was established in 1993, with its registered address at Shuangtaigou Village, Yingchengzi Subdistrict, Ganjingzi District, Dalian City, Liaoning Province. It is a domestically funded manufacturing enterprise specializing in the research and development, production, and application services of industrial anti-corrosion coatings for over thirty years. The company’s registered capital is RMB 5 million. It remains in continuous operation, having submitted its 2025 annual report on schedule, with no record of operational anomalies or serious violations of laws and regulations resulting in credit impairment. Its core business focuses on solvent-based heavy-duty anti-corrosion coating systems, including epoxy zinc-rich primers, epoxy micaceous iron oxide intermediate coats, polyurethane topcoats, and chlorinated rubber anti-corrosion paints. For many years, it has provided products and technical services to meet corrosion protection requirements across sectors such as petrochemicals, power generation, ports, bridges, and municipal infrastructure. Typical clients include PetroChina Liaoyang Petrochemical Branch, Dalian Port Group, Huaneng Dalian Power Plant, and certain subsidiaries of Anshan Iron and Steel Group. Its core capability lies in customized anti-corrosion coating solutions based on refined mature formulations and process adaptations, covering the entire technical service process—from product selection and construction guidance to on-site technical support. The company holds a hazardous chemicals coating production license (XK13-008-00078) and ISO 9001:2015 Quality Management System Certification (Certificate No.: 00822Q30258R2M, valid until December 17, 2025). Publicly available information does not indicate that it holds ISO 14001 or ISO 45001 certifications, nor does it disclose any invention patents, utility model patents, or participation in drafting national or industry standards. Leveraging its long-standing project execution track record within the Bohai Rim Economic Zone—particularly in Liaoning, Jilin, and Heilongjiang provinces—the company has established stable regional service capabilities. Deliverables encompass anti-corrosion coating supply, complementary construction technical support, and collaborative project acceptance assistance. Project types primarily include anti-corrosion for medium-to-large-scale petrochemical facilities, long-term protection of port steel structures, and corrosion-resistant coatings for flue gas systems in thermal power plants. Public sources show no evidence of export operations or acquisition of foreign market access certifications such as EU CE, U.S. FDA/NSF, or Middle Eastern SASO; nor do they indicate any overseas project implementation records. Its cooperation model centers on direct product supply plus localized technical services, supporting batch deliveries aligned with engineering milestones, technical briefings, and on-site support throughout construction—suitable for domestic chemical engineering projects involving new construction, expansion/upgrading, or inspection/maintenance. (Word count: 518)

Dalian Mingde Energy Conservation and Environmental Protection Engineering Technology Co., Ltd. was established in 2019, with its registered address in Dalian City, Liaoning Province. It is an integrated environmental protection technology service enterprise specializing in industrial water treatment and exhaust gas control. The company’s core business includes energy conservation and environmental protection engineering technology development, consultation, services, and technology transfer; design, installation, commissioning, and operation & maintenance of water treatment, air pollution control, and solid waste treatment equipment; specialized design of environmental engineering projects (water pollution prevention and control, air pollution prevention and control, solid waste treatment and disposal); professional contracting for environmental protection engineering; and operation of environmental pollution control facilities (subject to requisite qualifications). Its core competencies focus on advanced wastewater treatment and reclaimed water reuse, VOCs control, flue gas desulfurization and denitrification, and collaborative resource recovery treatment of solid waste in high-energy-consuming and high-emission industries such as iron and steel, petrochemicals, power generation, and dyeing & printing. The company holds Grade-B qualification for specialized design of environmental engineering projects (water pollution prevention and control engineering) (Certificate No.: A221011195) and Grade-II qualification for professional contracting of environmental protection engineering projects (Certificate No.: D221046411), and has obtained certifications for ISO 9001 Quality Management System, ISO 14001 Environmental Management System, and ISO 45001 Occupational Health and Safety Management System. Representative completed projects include the enhanced pretreatment and membrane-integrated reuse project for phenol-cyanide wastewater at Anshan Iron and Steel Group’s coking plant; water-saving retrofit technical services for the circulating water system at Hengli Petrochemical; and the EPC project for VOCs collection and RTO incineration control systems at Dalian Huarui Heavy Industry’s cast steel workshop. Its clients comprise key industrial enterprises across Northeast China. Its primary service area is Liaoning Province, and its collaboration models encompass technical consultation, engineering design, EPC general contracting, equipment supply, and third-party operation & maintenance services for environmental protection facilities.