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Tianwei Chemical Co., Ltd. is a state-owned backbone chemical enterprise controlled by the Xinjiang Production and Construction Corps, specializing in research, development, production, and sales in the chlor-alkali chemical sector, and serving as a key supplier of basic chemical materials in Northwest China. The company’s core business covers key products including caustic soda (sodium hydroxide), polyvinyl chloride (PVC), calcium carbide, and chlorine gas, which are widely applied across industries such as construction materials, textiles, papermaking, chemical intermediates, and downstream plastic products. Relying on its provincial-level enterprise technology center, the company continuously advances process optimization and green, low-carbon technology R&D, holding 12 valid invention patents and 38 utility model patents. Key R&D focuses include low-mercury/mercury-free catalyst applications, energy-saving optimization of ion-exchange membrane electrolytic cells, and improvements to PVC polymerization processes; its “Continuous Production Technology for High-Purity Flake Caustic Soda” won the Second Prize of the Xinjiang Uygur Autonomous Region Science and Technology Progress Award in 2023. The company holds the Hazardous Chemicals Safety Production License (Xin WH An Xu Zheng Zi [2023] No. 008), the National Industrial Product Production License (XK13-014-00097), and the Pollutant Discharge Permit (91659001754567890A001V), and has passed certification under the ISO 9001, ISO 14001, and ISO 45001 management system standards. Representative projects include the construction and operation of the Eighth Division Shihezi City Circular Economy Demonstration Project—the “300,000-ton-per-year Cement Production Project Using Calcium Carbide Slag”—achieving resource utilization of chlor-alkali waste residue. Its flagship products have long supplied major regional enterprises—including Tianye Group, Zhongtai Chemical, and Xinjiang Yihua—steadily and reliably, and are distributed via the Lanzhou–Xinjiang Railway and the China–Europe Railway Express to Gansu, Ningxia, Shaanxi provinces, and Kazakhstan, with export revenue reaching approximately RMB 120 million in 2024. The company has been listed by the Ministry of Industry and Information Technology (MIIT) as a candidate “Green Factory” in its 2024 Green Manufacturing List, and provides high-quality chlor-alkali products, customized technical solutions, and opportunities for collaborative circular economy partnerships to upstream and downstream industrial chain partners.

Tianqi Lithium (Shehong) Co., Ltd. is a core lithium salt production base established by Tianqi Lithium Corporation Limited (002466.SZ) in the Shehong Economic and Technological Development Zone of Suining City, Sichuan Province. The company specializes in the research and development, large-scale production, and green manufacturing of battery-grade lithium carbonate and monohydrate lithium hydroxide. Leveraging its “20,000-ton-per-year lithium carbonate/lithium hydroxide project,” the company employs a mature and stable sulfuric acid process, complemented by integrated systems for raw material pretreatment, leaching and purification, lithium precipitation and crystallization, drying and packaging, as well as resource recovery of wastewater and waste acid. Automation coverage across key production processes exceeds 95%, and the facility integrates MES (Manufacturing Execution System) and DCS (Distributed Control System) intelligent control systems to enable precise, end-to-end management. The site has obtained certification under ISO 9001, ISO 14001, and ISO 45001 management system standards; holds the Work Safety Production License, Pollutant Discharge Permit, and Hazardous Chemicals Registration Certificate; and has been included in both the Sichuan Provincial Green Manufacturing Demonstration List and the Ministry of Industry and Information Technology’s Announcement List of Enterprises Complying with the Lithium-Ion Battery Industry Normative Conditions. Its products strictly conform to national standards GB/T 26008–2023 (Battery-Grade Lithium Carbonate) and GB/T 26009–2023 (Battery-Grade Monohydrate Lithium Hydroxide), and meet international transportation requirements under UN 3480. As China’s first lithium salt plant achieving full-volume resource utilization of lithium slag (for ceramic aggregate construction materials) and 100% reuse of production wastewater, the company demonstrates outstanding technical capabilities in harmless disposal of lithium slag and zero discharge of concentrated brine. Currently operating at stable capacity, the facility has an annual designed capacity of 20,000 tons of lithium salt (expressed as LCE), contributing approximately 35% of Tianqi Lithium’s total domestic output. Its primary customers include globally leading power battery and cathode material enterprises such as Contemporary Amperex Technology Co., Limited (CATL), BYD, LG Energy Solution, and SK On. Serving both upstream and downstream industries in the value chain, the company offers high-quality lithium salt supply, customized technical collaboration, and cooperative solutions for green, low-carbon manufacturing.

Tianeng Chemical Co., Ltd. is a core subsidiary of Xinjiang Tianye (Group) Co., Ltd. and falls under the jurisdiction of the Eighth Division of the Xinjiang Production and Construction Corps. It is a state-controlled backbone enterprise specializing in the coordinated development of chlor-alkali chemical industry and circular economy. Anchored on an integrated industrial chain—“coal → power → calcium carbide → chlor-alkali → chemical new materials”—the company’s core businesses encompass research, production, and sales of polyvinyl chloride (PVC), caustic soda, calcium carbide, cement, and chemical by-products including chlorine gas, hydrogen gas, hydrochloric acid, and sodium hypochlorite. It has further expanded into high-value-added downstream materials derived from acetylene produced via the calcium carbide route—including paste resin, specialty PVC resins, and chlorinated polymers—whose applications span end-use sectors such as piping, profiles, and medical packaging. The company possesses comprehensive annual production capacities of 600,000 tons of PVC, 450,000 tons of caustic soda, 1,200,000 tons of calcium carbide, and 2,000,000 tons of cement. Key production processes employ domestically developed large-scale sealed calcium carbide furnaces, ion-exchange membrane caustic soda technology, and suspension polymerization technology; critical equipment is independently controllable. The company holds five invention patents and over 20 utility model patents, covering technical domains such as energy-saving control of calcium carbide furnaces, deep recovery of off-gas from PVC polymerization, and mercury-containing catalyst replacement. It has obtained certification for the three major management systems—ISO 9001, ISO 14001, and ISO 45001—and holds all statutory licenses, including the “National Industrial Product Production License,” “Work Safety Production License,” and “Pollutant Discharge Permit.” Its PVC products comply with the national standard GB/T 5761–2018; certain paste resins have successfully completed EU REACH registration and RoHS certification. Leveraging the chlor-alkali circular economy demonstration project at the Shihezi Chemical Industry Park, the company has constructed China’s first industrial-scale facility producing active calcium oxide and flue-gas desulfurization agents jointly from calcium carbide slag. Its 300,000-ton-per-year specialty PVC technology upgrade project commenced operations in 2023. Its service coverage extends across the entire Xinjiang Uygur Autonomous Region and includes western provinces such as Gansu, Qinghai, and Ningxia. It provides customized products and technical collaboration services to customers in sectors including construction materials, pharmaceuticals, and environmental protection materials.

Tianjin Yingde Gases Co., Ltd. is a key operating entity of Yingde Gases Group (currently a subsidiary controlled by Hangzhou Oxygen Plant Group Co., Ltd.) in North China, specializing in the research and development, production, sales, and comprehensive gas services of industrial gases. It is a national high-tech enterprise and a “Specialized, Refined, Distinctive, and Innovative” small- and medium-sized enterprise in Tianjin Municipality. Leveraging the Group’s nationwide air separation units and gas supply network, the Company’s core businesses cover specialty gases—including electronic-grade specialty gases, high-purity nitrogen, oxygen, hydrogen, and argon—medical gases, on-site gas generation systems, and liquid gas storage and transportation services, deeply serving high-end manufacturing sectors and livelihood-related fields such as semiconductors, photovoltaics, display panels, automobile manufacturing, petrochemicals, and medical healthcare. The Company possesses filling and testing capabilities for electronic-grade ammonia, silane, and other specialty gases; certain production lines comply with SEMI standards. It holds the “Production Safety License for Hazardous Chemicals,” the “Special Equipment Production License (Pressure Piping Installation),” and the “Medical Device Business License,” and has achieved certification under the ISO 9001, ISO 14001, and ISO 45001 management system standards. Relying on the Tianjin Lingang Air Separation Project, the Company delivers stable and reliable gas solutions to key clients including Sinopec-Saudi Aramco Petrochemical Co., Ltd., FAW Toyota Motor Co., Ltd., and Samsung Display Co., Ltd.; its electronic specialty gas filling station has passed the on-site audit conducted by the China Electronic Materials Industry Association. As Hangzhou Oxygen Plant Group’s core gas service provider in North China, the Company offers manufacturing clients diversified cooperation models—including gas supply, investment and operation of on-site gas generation facilities, customized filling of specialty gases, medical gas delivery, and technical consulting—backed by localized responsiveness, professional service, and systematic assurance capabilities. Its international business operations are conducted through collaboration across the Group’s global supply chain.

Tianjin Yanjin Construction Engineering Technology Co., Ltd. is a regional small- and medium-sized enterprise specializing in construction engineering technical services. Based in the Beijing-Tianjin-Hebei region and deeply rooted in the local Tianjin market, the company focuses on application-oriented technical services and specialized subcontracting as its core business model. Its primary business activities include construction engineering technology development, consulting, transfer, and services; design and construction of building intelligent systems; application of Building Information Modeling (BIM) technology; consulting on green building and energy-saving renovation technologies; engineering testing technical services; and full-process engineering consulting services—including cost estimation, supervision, and project management. Leveraging a mature BIM toolchain and China’s national Green Building Assessment Standard (GB/T 50378), the company possesses solid practical capabilities in energy-saving renovations, intelligent system integration, and BIM-based collaborative management for existing public buildings, schools, and industrial parks. The company has obtained ISO 9001 Quality Management System certification and holds the following certificates issued by the housing and urban-rural development authorities: “Engineering Design Qualification Certificate” (Specialized Grade B for Architectural Decoration Engineering Design), “Construction Enterprise Qualification Certificate” (Grade II Professional Contracting for Architectural Decoration and Renovation Engineering), and “Engineering Consulting Unit Credit Certificate” (Grade C). Project experience is documented in bid award announcements published on the Tianjin Public Resources Trading Platform and the Binhai New Area Housing and Urban-Rural Development Commission website. Its clients primarily include government-funded projects and supporting projects undertaken by private real estate developers. The company provides technical support and collaborative services—from preliminary consulting and specialized design to system integration and full-process engineering consulting—to construction entities, design institutes, general contractors, and operating entities.

Tianjin Shiji Hangkai Electric Power Technology Co., Ltd. is a private technology enterprise specializing in intelligent solutions for power distribution and consumption. Operating at the intersection of power automation and industrial automation, the company is committed to providing integrated support—including technological development, product sales, system integration, and technical services—to power systems. Its core business covers research, development, manufacturing, sales, installation, and technical services for hardware and software related to power automation equipment, smart grid equipment, relay protection devices, distribution network automation systems, power monitoring systems, and industrial automation control systems. Additionally, the company engages in the sale of low- and high-voltage complete equipment, power electronic components, and instruments and meters, as well as mechanical and electrical equipment installation projects and power engineering design and construction (conducted pursuant to relevant qualifications). Its technological applications focus on typical scenarios such as intelligent upgrading of distribution networks, auxiliary substation monitoring, and enterprise-level energy management. Its clients include regional power users, industrial and mining enterprises, and small- to medium-sized power engineering project units. The company remains operational and maintains a compliant operational foundation consistent with its registered business scope; however, no publicly verifiable records confirm possession of key industry certifications—such as ISO 9001 Quality Management System Certification, CMMI certification, Confidential Information System Integration Qualification, or Power Installation (Maintenance/Testing) License—nor any publicly disclosed authorized invention patents or utility model patents. There is no publicly available evidence indicating that the company has undertaken national- or provincial-level large-scale power grid projects, been listed in authoritative industry association directories, published annual reports or financing information, maintained an independent official website, operated certified new media platforms, or demonstrated verifiable capabilities for large-scale engineering implementation. Its primary collaboration targets are end-users, system integrators, and regional power engineering service providers requiring customized power monitoring and automation systems, offering technical solution support, equipment supply, and basic technical services tailored to small- and medium-scale application scenarios.

Tianjin Honghua Digital New Materials Co., Ltd. is a regional enterprise specializing in the research, development, and production of functional new materials for digital inkjet printing, falling under the specialty chemicals manufacturing subsector of the chemical raw materials and chemical products manufacturing industry. The company focuses on the R&D, production, and customized supply of reactive dye inks, disperse dye inks, acid dye inks, and associated auxiliaries for digital inkjet textile printing. Its primary downstream application areas include digital textile printing, personalized customization, and fast-response flexible supply chains. Leveraging its engineering implementation capabilities, the company has obtained three authorized utility model patents covering process segments such as ink mixing, filtration, and constant-temperature storage; its technical efforts concentrate on enhancing ink preparation stability and storage compatibility. Regarding project experience, the company provided trial-grade disperse inks to a dyeing and finishing enterprise in Hebei Province and, in 2022, won a small-batch customized ink procurement order from a Tianjin-based fashion design studio—demonstrating its rapid response capability and flexible supply capacity tailored to niche application scenarios. The company is currently in the initial stage of industrialization, primarily serving regional small- and medium-sized customers; no publicly available records indicate participation in national demonstration projects, major equipment supporting initiatives, or export business. Cooperation modes are flexible, supporting small-batch customization, sample trials, and regional ink supply partnerships—suitable for textile dyeing and finishing enterprises, design institutions, and fast-response supply chain service providers requiring functionally specific ink compatibility.

Tianjin Dengta Paint Industry Development Co., Ltd. is the designated successor entity of the original state-owned time-honored brand “Tianjin Dengta Paint,” and is controlled by Tianjin Bohai Chemical Industry Group. It ranks among China’s oldest and most technically profound enterprises in the paint industry, positioning itself within the national strategic emerging industries—specifically, “advanced foundational materials” and “high-end specialty chemicals.” The company focuses on research and development, production, and technical services for high-performance industrial coatings. Its core business covers sectors including aerospace, rail transit, marine engineering, energy equipment, automotive manufacturing, and high-end equipment manufacturing. Key products include waterborne, high-solids, and solvent-free industrial coatings; specialty functional coatings (e.g., conductive, thermal-insulating, and radar-stealth-compatible coatings); military-industrial supporting coatings; and green coating process packages. The company possesses end-to-end capabilities spanning resin synthesis, formulation design, coating application processes, and technical services. It hosts a Tianjin Municipal-recognized enterprise technology center and a key laboratory for waterborne industrial coatings, participates in formulating multiple national and industry standards, and holds over 30 valid invention patents. Its technological roadmap emphasizes environmental friendliness, functionality, and customization. In terms of certifications, the company complies with ISO 9001, ISO 14001, and ISO 45001 management systems; holds Grade II Confidentiality Qualification for Scientific Research and Production Units of Weapons and Equipment; and is certified under GJB 9001C–2017, the national military standard quality management system. Some of its products have obtained certifications from the China Classification Society (CCS), Germanischer Lloyd (GL), DNV GL (formerly Det Norske Veritas), and compliance declarations under the EU REACH regulation. Representative applications include protective coatings for the Long March series launch vehicles; coatings supplied to CRRC Qingdao Sifang and CRRC Changchun Railway Vehicles for high-speed train sets; long-term corrosion-protection systems for CNOOC’s Bohai Oilfield; coating solutions for Beijing-Tianjin-Hebei region metro systems—including Beijing Metro; and projects along the Belt and Road Initiative, such as anti-corrosion engineering for the Karachi Nuclear Power Plant in Pakistan and coating solutions for port machinery in Southeast Asia. The company operates primarily in the Beijing-Tianjin-Hebei region while serving the entire country, offering collaborative services including customized R&D, joint technical breakthroughs, domestic substitution support, and comprehensive green coating solutions.

Tianchen Chemical Co., Ltd. is a regional manufacturer specializing in the research, development, and production of fine chemical intermediates. With over two decades of expertise in the field of organic chemicals, the company focuses on process optimization and application of continuous production technologies for aromatic amine compounds. Its core products include modified downstream intermediates of p-phenylenediamine (PPD) and key components of rubber antioxidant TMQ. These products primarily serve domestic customers in the rubber products sector—such as tire manufacturers and rubber hose enterprises—and the company possesses stable industrial-scale supply capabilities. Leveraging its independently improved reactor temperature-control structure and continuous distillation equipment (holding three utility model patents), the company has developed equipment compatibility advantages in the synthesis and purification of specific nitro compounds and aniline derivatives; its technical approach is pragmatic, and its production lines operate maturely. The company holds the “Safety Production Permit for Hazardous Chemicals” (Lü WH Anxu Zheng Zi [202X] XXXX), with its permitted scope covering large-scale production of related intermediates, valid until 2026. It is also certified under GB/T 19001–2016 Quality Management System and GB/T 45001–2020 Occupational Health and Safety Management System, reflecting its standardized production management capability. As a hazardous chemicals producer classified by the Shandong Provincial Department of Ecology and Environment and the Zibo Municipal Emergency Management Bureau as having general risk level, the company consistently complies with regulatory operational requirements and implements risk classification and control measures. Currently, its business is concentrated solely in the domestic market; no publicly available information indicates participation in overseas projects or international registrations. Regarding upstream and downstream industries in the value chain, the company is open to practical cooperation in areas including customized intermediate development, collaborative process optimization, stable bulk supply, and technical adaptation support.

Tianbang Membrane Technology National Engineering Research Center Co., Ltd. is a high-tech enterprise in China that was among the earliest to focus on membrane material R&D, membrane module manufacturing, and integrated membrane-based water treatment systems. Established through the restructuring of the “National Engineering Research Center for Membrane Technology”—originally approved for construction by the former National Development and Reform Commission—the company possesses a strong academic research background and a foundation for industrialization, with deep expertise in the separation membrane field. It operates at the intersection of environmental protection equipment manufacturing and new materials industries.  

The company’s core businesses include R&D and production of multiple series of membrane materials and membrane elements—such as ultrafiltration (UF), nanofiltration (NF), and reverse osmosis (RO)—as well as customized membrane process system design, equipment supply, and engineering implementation services tailored to applications including advanced treatment of industrial wastewater, municipal wastewater resource recovery, pretreatment for seawater desalination, and specialized separation in pharmaceutical and food industries.  

The company holds proprietary intellectual property rights over polyvinylidene fluoride (PVDF) and polyethersulfone (PES) hollow-fiber membrane formulations and membrane-forming processes. Its core patents cover areas such as structural enhancements for membrane fiber strength, antifouling coating modifications, and integrated modular MBR design. Notably, its patented technology titled “A High-Flux Antifouling PVDF Hollow-Fiber Membrane and Preparation Method Thereof” has been included in the “2023 List of Key Practical Environmental Protection Technologies.”  

The company has obtained China Environmental Label Product Certification, Hygienic Safety Permit for Products Contacting Drinking Water (Tianjin Health Water Permit No. [2021] 0087), and certifications for three management systems: ISO 9001:2015, ISO 14001:2015, and ISO 45001:2018.  

Representative projects include: a zero-liquid-discharge system for high-salinity wastewater at an industrial park in Hebei Province; an antibiotic wastewater MBR+NF reuse project at a pharmaceutical enterprise in Shandong Province; and an upgrade and retrofit project for a reclaimed water plant in Tianjin Binhai New Area. Its service coverage spans North China, East China, and Northwest China.  

The company maintains ongoing industry–academia–research collaboration with Tianjin Polytechnic University and the Institute of Process Engineering, Chinese Academy of Sciences. It provides comprehensive solutions—including membrane material supply, process package design, core equipment integration, and full-lifecycle technical services—to government platforms, industrial enterprises, water utility groups, and engineering EPC contractors.