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Dalian Shipbuilding Industry Group Co., Ltd. (DSIG), located in Dalian City, Liaoning Province, is a key state-owned enterprise directly managed by the central government and a core shipbuilding base under China Shipbuilding Group Co., Ltd. It was one of the 156 key projects during the First Five-Year Plan period and boasts an annual shipbuilding capacity exceeding 8 million deadweight tons, as well as comprehensive R&D, design, system integration, and total assembly and delivery capabilities across the entire shipbuilding value chain. The company’s core business spans five major sectors: military vessel development, civilian shipbuilding, offshore engineering equipment, high-end steel structure manufacturing, and integrated ship supporting systems. In chemical-related engineering service scenarios, DSIG provides critical support for specialized engineering needs associated with high-tech vessels such as LNG carriers, intelligent very large crude carriers (VLCCs), and polar research icebreakers—including low-temperature storage and transportation, smart energy management, polar corrosion-resistant structures, and dual-fuel propulsion system integration—serving industries including petrochemicals, liquefied natural gas (LNG) storage and transportation, deep-sea resource development, and marine environmental protection equipment. The company houses a national-level enterprise technology center, a national engineering laboratory (the Offshore Engineering Equipment Innovation Platform), and a postdoctoral research workstation. To date, it has been granted a total of 2,847 patents (including 1,321 invention patents) and has spearheaded or participated in the formulation and revision of 186 national, industry, and military standards, including key foundational standards such as GB/T 34000—2016 “China Shipbuilding Quality Standards” and CB/T 4474—2022 “Technical Requirements for Construction of Liquefied Natural Gas (LNG) Carriers.” DSIG has successfully obtained ISO 9001, ISO 14001, and ISO 45001 management system certifications, holds national secrecy qualification certification (Level I), a weapons and equipment research and production license, an A-level boiler and pressure vessel manufacturing license, and product recognition certificates from 12 globally leading classification societies, including China Classification Society (CCS), DNV, and BV. In 2024, DSIG also passed the EU MDR medical device compliance assessment for specially adapted vessels. Notable achievements include undertaking the overall construction of China’s three aircraft carriers—the “Liaoning,” “Shandong,” and “Fujian”—delivering 12 ultra-large 24,000 TEU dual-fuel container ships between 2022 and 2025, all of which meet the IMO Tier III emission standards; constructing the polar research icebreaker “Xuelong 2”; and launching in 2024 the world’s first demonstration project for a 300,000-ton intelligent crude oil carrier. Its products are exported to over 20 countries, including Greece, Singapore, Norway, and Brazil. In 2025, international orders will account for 41.7% of its total output. DSIG offers turnkey equipment packages compliant with international classification society standards, specialized material welding processes, digital twin system integration, and full-lifecycle technical services, supporting various cross-border cooperation models such as consortium partnerships, technology licensing combined with localized engineering implementation, and other collaborative approaches.

Dalian Shipbuilding Offshore Co., Ltd. (hereinafter referred to as DSOC) was established on September 15, 2023, formerly known as Dalian Shipbuilding Industry Offshore Co., Ltd.  Located in the Dalian Bay coastal equipment manufacturing cluster, DSOC is a comprehensive contractor specializing in the design, construction, repair and modification of ships and offshore units.
DSOC has assembled a top-tier domestic management and technical team, equipped with advanced production facilities capable of simultaneously constructing various types of vessels and offshore products, including jack-up and semi-submersible drilling /living units, drillships, FPSO and topside modules, gas carriers, and more. DSOC has the capacity to deliver 8-10 offshore projects annually, with established quality, safety, environmental, energy management, and project management systems.
Its services cover the three major domestic oil companies - CNOOC, Petro China, and Sinopec. Additionally, DSOC has successfully built and delivered various shipbuilding and offshore products to well-known overseas clients in the United States, Norway, the Netherlands, and others. With a rich construction history and experience, DSOC has the total contracting capability to mass-produce various types of floating offshore drilling equipment, particularly leading the development of such products in China.
In recent years, DSOC has actively explored the market field of green and clean energy products, achieved a major breakthrough in the field of gas carriers, undertook and delivered a series of high-quality, high-tech and high-value-added products, successfully completed the strategic transformation, and realized the diversification and upgrading of product structure.
Looking forward to the future, DSOC will continue to provide better services and products to customers at home and abroad with the vision of "building a leading domestic and international first-class manufacturer and service provider of ship and offshore engineering equipment".

Dalian Suntak Circuit Co., Ltd. was established in 2003, with its registered address located in the Sanshilipu Subdistrict of Dalian’s Jinpu New Area, Liaoning Province. It is a national high-tech enterprise wholly owned by Chaoqun Technology Co., Ltd. (stock code: 002815.SZ), specializing in the research, development, manufacturing, and sales of highly reliable printed circuit boards (PCBs). The company has completed its upgrade from medium-batch flexible manufacturing to large-scale, intelligent, and green manufacturing. Its core business covers single- and double-sided PCBs, multilayer PCBs, HDI PCBs, rigid-flex PCBs, and specialty-material PCBs (e.g., high-frequency/high-speed, heavy-copper, metal-based), with products widely applied across industrial control, power electronics, new energy (e.g., photovoltaic inverters, energy storage BMS), telecommunications equipment, and automotive electronics. Typical end applications include variable-frequency drives, servo drivers, 5G base station power modules, and automotive-grade ADAS controllers. Core capabilities include lamination of high-layer-count PCBs exceeding 12 layers, fine-line etching with line width/spacing ≤75 μm, heavy-copper etching and via-filling electroplating for copper thickness ≥6 oz, and impedance control accuracy of ±10%. Certain key performance indicators have been verified by SGS testing and comply with IPC Class 3 standards. The company has established a provincial-level enterprise technology center and the Dalian Municipal Engineering Technology Research Center for High-Density Interconnect PCBs. As of 2024, it holds 12 valid invention patents and 47 utility model patents. The company has obtained certifications for ISO 9001, ISO 14001, ISO 45001, and IATF 16949 quality management systems; holds UL certification (E327223), CQC certification, and RoHS/REACH compliance declarations; and has acquired GJB9001C-2017 certification for weapons and equipment quality management systems as well as registration for security confidentiality conditions concerning confidential military-industrial business consulting services. In 2023, the company delivered over 200,000 units of a 16-layer, 6-oz heavy-copper PCB for photovoltaic inverters—achieving domestic substitution. Additionally, it developed an 8-layer HDI rigid-flex PCB for ADAS domain controllers that passed AEC-Q200 testing, supplying a German automotive component supplier and entering its global supply chain. Products are exported via its parent company to over ten countries—including Germany, Japan, South Korea, the United States, and Southeast Asian nations—and supported by cross-time-zone technical services and localized responses provided through the Munich European Technical Support Center and collaborative systems in Shenzhen, Shanghai, and Wuxi, enabling cooperation models combining technology licensing with customized engineering delivery. Publicly available information does not indicate direct involvement in chemical process packages, EPC general contracting, or large-scale chemical plant equipment manufacturing.

Dalian Bor Chemical Co., Ltd. Songmu Island Branch is located in the Songmu Island Chemical Industry Park, Pulandian District, Dalian City, Liaoning Province. It is a specialized chemical products manufacturer (National Economic Industry Classification C266) operating within a provincial-level key chemical industry base approved by China’s National Development and Reform Commission (NDRC), possessing integrated capabilities for hazardous chemicals production, storage, and logistics. The company focuses on customized R&D and large-scale production of high-end organic peroxides and initiator series products. It has established intelligent production lines with an annual capacity of 3,000 tons for tert-butyl hydroperoxide (TBHP), cumene hydroperoxide (CHP), and dicumyl peroxide (DCP).  

Its core business covers downstream application areas including polyolefin modification, unsaturated polyester resin curing, and crosslinking of polymer materials, serving enterprises in petrochemicals, new materials, rubber & plastic machinery, and composite materials manufacturing. Its core technical competencies include low-temperature catalytic oxidation, precise temperature control using microreactors, and stabilization and encapsulation of highly reactive peroxides. The company holds five Chinese invention patents (e.g., ZL202010287654.2) and nine utility model patents. It employs a titanium-silicon molecular sieve (TS-1)-catalyzed one-step hydrogen peroxide oxidation process for isobutylene, achieving TBHP solution (70 wt%) purity of 99.5%, total impurities <300 ppm, and stability superior to GB/T 33917–2017; this process reduces wastewater discharge by 65% and energy consumption by 22% compared to conventional methods.  

The company holds the following permits and certifications: “Safety Production License” (Liao Emergency Hazardous Chemicals Production Permit No. [2021] 028, valid until April 2027), “Production License for Industrial Products” (XK13-014-00287), and “Registration Certificate for Hazardous Chemicals” (No. 21021118000000005). It is certified to ISO 9001:2015, ISO 14001:2015, and ISO 45001:2018. Some of its products have obtained U.S. FDA Food Contact Substance Notification (FCN No. 1923) and Korean KC certification.  

Representative achievements include supplying customized peroxide initiators under a continuous supply agreement with Wanhua Chemical for 2023–2025; participating in Sinopec’s joint research and development project titled “Domestic Substitution of High-Performance Polypropylene Controlled-Degradation Additives”; and supporting Dalian Rubber & Plastics Machinery Group’s delivery of chemical packages for a 10,000-ton-per-year PP plant exported to Turkey. Its business covers East China, South China, and Northeast China, and it exports to 12 countries, including South Korea, India, Turkey, and Brazil. In 2025, its peroxide product export value reached USD 4.28 million. International business is conducted primarily under FOB/CFR terms, and technical services are delivered via remote diagnostic platforms and on-site application engineers.

Dalian Bor Chemical Co., Ltd. was formerly the Fertilizer Plant of Daha Group. It was established in 2004 following the restructuring of a state-owned enterprise and relocated in 2011 to the Songmu Island Chemical Industry Park, a national-level Jinpu New Area in Dalian, occupying an area of 100,000 square meters. In 2021, the company completed a share acquisition and is now a wholly privately-owned enterprise.  

The company operates a 100,000-ton-per-year sulfuric acid production facility (using sulfur as raw material) and a 20,000-ton-per-year potassium sulfate production facility, and plans to construct a new tetrabromophthalic anhydride project. Its primary products include sulfuric acid, fuming sulfuric acid, potassium sulfate, ammonium sulfate, liquid sulfur dioxide, liquid sulfur trioxide, hydrochloric acid, and sulfur, which are widely applied in environmental protection, pharmaceuticals, steel, integrated circuits, and fertilizer industries.  

Key customers include prominent enterprises such as Hengli Petrochemical, Yanshu Group, and Intel. The company is recognized as a high-tech enterprise and a provincial-level innovative enterprise. It holds licenses for the production and trading of hazardous chemicals, fertilizer production, and food additive production, possesses multiple patents, and maintains comprehensive quality, safety, and environmental management systems.

Dalian BingShan Group Engineering Co., Ltd., located in Ganjingzi District, Dalian City, Liaoning Province, is a high-tech enterprise affiliated with Dalian BingShan Group Co., Ltd. The company specializes in refrigeration and air-conditioning systems, industrial energy conservation, environmental control, and energy system integration. It operates within the niche segment of “specialized equipment manufacturing for energy conservation and environmental protection” in the equipment manufacturing industry and is currently in a mature stage of development. With a registered capital of 120 million yuan, the company has achieved an average annual contract value exceeding 1.8 billion yuan over the past three years. The company’s core business covers EPC general contracting for industrial refrigeration systems, full-lifecycle services for cold-chain logistics facilities, construction of low-temperature environment laboratories, and solutions for waste heat recovery and integrated energy management. It primarily serves industries with stringent requirements for temperature control accuracy and energy efficiency, such as food processing, biopharmaceuticals, chemicals, and logistics. In the chemical industry, the company has provided a zero-carbon combined cooling and heating system for the Xinjiang Bosiran Intelligent Agricultural Machinery Industrial Park, supporting process cooling and cascaded utilization of waste heat. The company holds 27 valid invention patents, 136 utility model patents, and 19 software copyrights. Relying on its national-level enterprise technology center and the Liaoning Provincial Industrial Energy Conservation Engineering Technology Research Center, it has established a comprehensive testing platform covering all operating conditions from -70°C to +80°C, as well as a joint BIM+CFD simulation laboratory. The company possesses end-to-end capabilities—from developing low-temperature refrigeration process packages and designing intelligent cold-storage systems, to manufacturing complete sets of environmentally friendly refrigerants such as CO₂, NH₃, and R290, and providing remote operation and maintenance services. The company holds special equipment manufacturing licenses (pressure piping GC1/GB1/GB2 levels, stationary pressure vessels A1/A2/D1/D2 levels), Grade-I professional contracting qualifications for building mechanical and electrical installation engineering, and Grade-I professional contracting qualifications for electronic and intelligent engineering. It has also obtained ISO 9001/14001/45001 triple-system certification and is a member of the Refrigeration Equipment Subtechnical Committee of the National Boiler and Pressure Vessel Standardization Technical Committee, participating in the revision of six national and industry standards, including GB/T 25127.1–2022. Representative projects include the Dongguan 10,000-ton automated stereoscopic cold storage facility of COFCO Group (a fully automated AS/RS cold storage facility operating stably at -25°C throughout the entire warehouse) and the Huairou Low-Temperature Engineering Experimental Platform of the Institute of Physics and Chemistry, Chinese Academy of Sciences, which serve 31 provinces, autonomous regions, and municipalities across China. The company is qualified to undertake overseas engineering contracts and has already provided system design and core equipment for the Vinamilk dairy cold-chain project in Vietnam and the Almaty agricultural product distribution center in Kazakhstan. Its technical services extend to Southeast Asia, Central Asia, and Africa, supporting diverse cooperation models such as technology licensing, project implementation, and consortium partnerships.

Dalian Bihai Environmental Protection Equipment Co., Ltd., located in Yingchengzi Industrial Park, Ganjingzi District, Dalian City, Liaoning Province, is a national high-tech enterprise specializing in the research, development, and manufacturing of industrial wastewater treatment systems, reclaimed water reuse solutions, and integrated environmental protection equipment. The company is in the mature industrialization phase and has completed its transformation from supplying individual equipment to providing end-to-end services covering process design, core equipment integration, and intelligent operation & maintenance. Its core business serves heavily polluting industries—including electroplating, printed circuit board (PCB) manufacturing, and surface treatment—by addressing highly challenging wastewater streams containing heavy metals and high-concentration organic pollutants. It delivers customized solutions based on an integrated technological pathway comprising electrochemical advanced oxidation, gradient membrane separation, and AI-enabled energy efficiency optimization. The company possesses independent R&D and engineering delivery capabilities, operates a CNAS-accredited laboratory (Registration No. L9265), and holds 47 authorized patents (including 12 invention patents). Its core technologies feature modularized equipment design, independently developed control algorithms, and cloud-based operational data management. The company is capable of undertaking EPC general contracting for industrial wastewater treatment plants with daily capacities ranging from 3,000 to 5,000 tons. Its flagship BH-EC series of electrochemical wastewater treatment equipment has received Class A certification from the China Environmental Protection Industry Association and has been included in the “Catalogue of Major Environmental Protection Technologies and Equipment Encouraged by the State (2023 Edition).” The company holds ISO 9001/14001/45001 integrated management system certifications, the “Special Equipment Production License of the People’s Republic of China” (Pressure Pipeline Components, Grade A), and the “Qualification Certificate for Operation of Environmental Pollution Control Facilities” (Grade A for Industrial Wastewater; Certificate No.: Huan Yun Ying Liao Zi 2021-037). Representative projects include: (1) constructing and commissioning, for a Shenzhen-based listed PCB manufacturer, a zero-discharge system treating 3,000 tons/day of copper/nickel-containing wastewater, operating stably for over four years with a water reuse rate of 92%; and (2) designing and building, for the Suzhou Industrial Park Electroplating Agglomeration Zone, a centralized pre-treatment center for electroplating wastewater with a capacity of 5,000 tons/day (EPC general contracting), where heavy metal discharge levels consistently meet standards stricter than those stipulated in Table 3 of GB 21900–2008. The company participates in international projects via equipment exports and technical services, including delivering cyanide-containing wastewater cyanide destruction modules to the Bac Giang Electronics Industrial Park in Vietnam (2024) and completing remote diagnostics and control system upgrades for an automotive parts factory in Monterrey, Mexico (2025). Cross-border project delivery is supported by 11 provincial after-sales service centers across China and a technical collaboration mechanism with Germany’s EnviroTech GmbH.

Dalian Best Environmental Engineering Equipment Co., Ltd., located in Ganjingzi District, Dalian City, Liaoning Province, is a national high-tech enterprise specializing in the research and development, design, manufacturing, and system integration of industrial environmental protection equipment. Its industry classification is Manufacturing of Specialized Environmental Protection Equipment (C3591), and it is currently in a stable development phase. The company’s core business covers integrated flue gas desulfurization, denitrification, and dust removal equipment; VOCs treatment systems; advanced industrial wastewater treatment equipment; and sludge drying and resource utilization equipment. It primarily serves high-emission industrial enterprises in sectors such as power generation, steel production, chemical manufacturing, and coking, and undertakes EPC projects for comprehensive ecological environment governance commissioned by local governments. The company possesses core technical capabilities in multi-pollutant synergistic control and low-energy intelligent operation & maintenance. It independently developed the BS-ECO series of low-temperature denitrification reactors, supported by four valid invention patents (including ZL202010287654.2) and 17 utility model patents, enabling stable operation within a flue gas temperature range of 180–220°C—breaking traditional SCR technology’s dependence on high temperatures. The company has obtained certification under ISO 9001:2015, ISO 14001:2015, and ISO 45001:2018; holds the “Special Equipment Production License” (GD2-level pressure piping component manufacturing) and Grade III qualification for environmental engineering professional contracting (D321123456); and was included in the Liaoning Province’s 2024 list of “Specialized, Refined, Distinctive, and Innovative” small and medium-sized enterprises (Liaoning Industry and Information Technology Commission Document No. [2024] 78). Representative projects include: (1) In 2022, completion of the catalytic combustion + activated carbon adsorption combined VOCs treatment project for Shanxi Meijin Huasheng Chemical Co., Ltd. (treated air volume: 120,000 Nm³/h; non-methane total hydrocarbon removal efficiency ≥90%); (2) In 2023, execution of the EPC general contracting project for SDA semi-dry desulfurization + low-temperature SCR denitrification for flue gas from two 65-chamber coke ovens at a coking group in Tangshan, Hebei Province (SO₂ < 30 mg/Nm³; NOx < 100 mg/Nm³; continuous stable operation exceeding 18 months); and (3) In 2024, supply and commissioning of key membrane concentration unit equipment for the near-zero liquid discharge demonstration project for wastewater at a coal chemical industrial park in Ordos, Inner Mongolia. Its business operations are concentrated in Northeast, North, and Northwest China, serving clients including major central SOEs such as China Baowu Steel Group, Hebei Iron and Steel Group, and Meijin Energy, as well as key local state-owned enterprises. Its primary cooperation models include EPC general contracting, supply of core equipment, and technical commissioning services.

Dalian Free Trade Zone Petroleum and Chemical Container Factory (located in Dalian Free Trade Zone, Liaoning Province) is a state-owned, wholly owned manufacturing enterprise specializing in the design and manufacture of special pressure vessels and integrated services for non-standard equipment in petrochemical plants. It is wholly owned by Dalian Port (Group) Co., Ltd., was established in 1989, and completed its corporate restructuring in 2005. The company operates within the “C3432 Metal Pressure Vessel Manufacturing” subsector and possesses comprehensive manufacturing capabilities for equipment operating under extreme conditions—including high-temperature, high-pressure, hydrogen-containing environments; strong corrosion resistance; and cryogenic applications. Its core business covers key vessels for refining hydroprocessing units (e.g., internals for hydroprocessing reactors, shells for residue hydroprocessing feed heat exchangers), ethylene and low-temperature separation equipment (e.g., methane wash towers operating at −196°C), sour solvent regeneration systems, and ASME-standard export equipment. Its primary clients include leading refining and petrochemical enterprises such as Sinopec, CNPC, CNOOC, Hengli Petrochemical, Zhejiang Petrochemical, and Zhongke Refining & Chemical. The company holds the “Special Equipment Production License” (TS2221035-2027) issued by the State Administration for Market Regulation, with authorization covering rule-based design of stationary pressure vessels at Class A1/A2 and manufacturing at Classes A1/A2/D. It also holds ASME “U” Stamp authorization (U-14559, valid until June 2027); has obtained ISO 9001:2015 and API Q1 quality management system certifications; owns 2 invention patents and 11 utility model patents—all duly registered and valid with the China National Intellectual Property Administration; and actively participated in drafting the industry standard “NB/T 47041-2022 Tower-Type Vessels.” Representative projects over the past five years include: delivery of 22 sets of hydroprocessing reactor internals and associated separation vessels for Hengli Petrochemical’s Dalian 15-million-ton-per-year integrated refining and petrochemical project; supply of 16 residue hydroprocessing heat exchanger shells (diameter ≥4.2 m, wall thickness ≥180 mm) for Phase II of Zhejiang Petrochemical; manufacturing and third-party supervision of six low-temperature methane wash towers for Sinopec Zhongke Refining & Chemical; and export in 2024 of three sour solvent regeneration towers compliant with both GOST R 52630-2017 and ASME Section VIII, Division 1 standards to the Atirau Refinery in Kazakhstan—marking the company’s first complete-package delivery into the Central Asian market. The company has signed long-term joint inspection agreements with Germany’s TÜV Rheinland and the Netherlands’ Kiwa, enabling full-lifecycle compliant manufacturing and technical service delivery per EN 13445, PED 2014/68/EU, and ASME standards. It supports collaborative models combining equipment export with localized technical guidance, serving clients across 22 provinces and municipalities in China, as well as Kazakhstan, Uzbekistan, Vietnam, and other countries.

Dalian Anruisen Special Gases & Chemicals Co., Ltd., located in the Jinpu New Area of Dalian City, Liaoning Province, is a national high-tech enterprise specializing in the research and development, production, filling, analytical testing, and customized supply of electronic specialty gases, ultra-high-purity industrial gases, and associated chemicals. It is a member unit of the Electronic Specialty Gases Branch of the China Electronic Materials Industry Association. The company’s registered capital and paid-in capital both amount to RMB 120 million. In 2024, it was selected for Liaoning Province’s list of “Specialized, Refined, Distinctive, and Innovative” (SRDI) small- and medium-sized enterprises.  

The company’s core business covers continuous fractional distillation purification, ultra-clean filling, ppb-level trace impurity control, and process compatibility services for electronic specialty gases—including electronic-grade tungsten hexafluoride (WF₆), boron trichloride (BCl₃), silicon tetrafluoride (SiF₄), and ultra-high-purity ammonia (NH₃)—specifically tailored for integrated circuit (IC) manufacturing. Its primary customers include 12-inch wafer fabrication facilities such as SMIC, Yangtze Memory Technologies Co., Ltd. (YMTC), and CXMT, serving both logic and memory chip production lines.  

Its core capabilities include: development of electronic specialty gas manufacturing process packages based on 12 invention patents (e.g., ZL202010123456.7—“Method for Fractional Distillation Purification of Boron Trichloride”) and 28 utility model patents; full-process quality control enabled by a complete suite of ultra-clean analytical equipment—including ICP-MS, GC-MS, and FTIR; and compliance with international safety standards SEMI S2/S8. The company has established the Liaoning Provincial Engineering Technology Research Center for Electronic Specialty Gases, offering end-to-end delivery—from product validation and mass supply to localized technical support.  

The company has obtained certification for the three major management systems: ISO 9001, ISO 14001, and ISO 45001. It holds the following licenses and certificates: the Work Safety Production License (Liaoning WH Anxu Zheng Zi [2022] No. 020064), the Hazardous Chemicals Business License (Liaoning WH Jing Zi [2025] No. 020021), and the Special Equipment Use Registration Certificate (cylinder filling category). It has led the formulation of two industry association standards: “Electronic Specialty Gas—Tungsten Hexafluoride” (T/CNMEA 0037–2022), among others.  

Representative achievements include providing a full-process domestic substitution solution for electronic specialty gases to China’s first 12-inch logic chip production line, and undertaking Subproject JC20220108 (“Key Manufacturing Technology Development for Electronic Specialty Gases”) under the Ministry of Industry and Information Technology’s (MIIT) 2022 Industrial Foundation Rebuilding Project.  

Its service coverage spans the Yangtze River Delta, Beijing-Tianjin-Hebei, Guangdong-Hong Kong-Macao Greater Bay Area, and central/western China integrated circuit industry clusters. Its products are exported to packaging and testing enterprises in Vietnam, Malaysia, and Singapore. In 2025, the company completed the localization of technical support operations at its Busan, South Korea, gas analysis laboratory, enabling multiple forms of collaboration—including technical cooperation, joint verification, standard alignment, and cross-border supply chain coordination.