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Qinghai Yihua Chemical Co., Ltd. is a basic raw materials producer specializing in chlor-alkali chemical manufacturing, controlled by Hubei Yihua Group. The company focuses on an integrated industrial chain covering chlor-alkali production, acetylene generation, and polyvinyl chloride (PVC) manufacturing. Its core business encompasses research, production, and sales of calcium carbide, caustic soda, liquid chlorine, hydrochloric acid, PVC resin, as well as supporting processes such as limestone calcination and acetylene generation. Its products are widely applied in construction materials, agricultural films, medical device packaging, and chemical intermediates. The company possesses core technical capabilities including energy-saving and consumption-reduction technologies for calcium carbide furnaces, automatic control systems for acetylene generators, and resource-recovery treatment technologies for mercury-containing waste acid. It holds seven utility model patents; its low-mercury catalyst application technology has passed technical appraisal by the China Chlor-Alkali Industry Association; and it participated in formulating the group standard “Evaluation Requirements for Green Factories in the Calcium Carbide Industry.” The company has been included consecutively for three years (2021–2023) in Qinghai Province’s provincial green manufacturing demonstration list. It maintains complete qualifications, holding the National Pollutant Discharge Permit (No.: 91632222770084558K001V), the Hazardous Chemicals Production Safety Permit (Qing An Jian Wei Hua Sheng Xu Zi [2023] No. 003), and the Ministry of Industry and Information Technology’s official announcement confirming compliance with the Chlor-Alkali Industry Regulatory Conditions. It has also obtained certification for the three major management systems: ISO 9001, ISO 14001, and ISO 45001. Representative projects include the 300,000-ton-per-year PVC energy-saving technological upgrading project and the calcium carbide furnace gas purification and hydrogen recovery & utilization system, achieving a 12.6% reduction in comprehensive energy consumption per ton of PVC. Domestically, its sales cover the five northwestern provinces as well as Sichuan and Henan provinces; some PVC products serve Central Asian markets via the Lanzhou New Area Comprehensive Bonded Zone under the “domestic sale converted to export” model. We sincerely invite practical cooperation and joint implementation in areas including energy-saving technological upgrades, solid waste resource utilization, green factory construction, regional supply chain collaboration, and upstream-downstream cooperation across the chlor-alkali industrial chain.

Qinghai Salt Lake Yuanpin Chemical Co., Ltd. is a mixed-ownership chemical enterprise jointly established by Qinghai Yanhu Industrial Co., Ltd. (Stock Code: 000792) and subsidiaries of Sinochem Group. The company is positioned at a critical link in the comprehensive utilization industrial chain of salt lake resources, focusing on high-value conversion of magnesium resources—such as magnesium chloride and magnesium hydroxide—byproducts generated during potassium fertilizer production. Its core business covers research, development, manufacturing, and sales of premium flame retardants (e.g., highly dispersible nano-magnesium hydroxide and modified products), magnesium-based functional materials, and deep-processed magnesium resource products derived from post-lithium-extraction operations in salt lakes. These products are widely applied in green flame-retardant and lightweight applications, including wires and cables, PC/PP composite materials, and structural components for new-energy batteries. Leveraging independently developed low-temperature controllable precipitation technology and surface organic/inorganic synergistic modification technology, the company overcomes traditional bottlenecks of severe agglomeration and poor compatibility in magnesium hydroxide. Its products achieve a particle size D90 ≤ 1.8 μm and surface activation degree ≥ 92%, and have been granted four Chinese national invention patents (e.g., CN114XXXXXXB). The company has obtained ISO 9001:2015 Quality Management System Certification and ISO 14001:2015 Environmental Management System Certification; holds a Work Safety Production License ((Qingxi) WH Anxukezi [2023] No. 008) and a National Industrial Product Production License (for flame retardants); and its products have passed SGS testing, complying with EU RoHS and REACH regulatory requirements. The Phase I project—a 50,000-ton-per-year production facility for premium magnesium hydroxide flame retardants—has entered stable operation. Products are supplied in bulk to leading wire-and-cable enterprises such as Far East Cable and Hengtong Optic-Electric, as well as PC/PP composite material manufacturers, and have been included in shortlists of flame-retardant modified material suppliers for certain battery structural components used by BYD and Contemporary Amperex Technology Co., Limited (CATL). Grounded in Qinghai Province’s salt lake resource endowment, the company closely aligns with Qinghai Province’s “14th Five-Year Plan” for high-quality manufacturing development, specifically targeting refined deep processing of magnesium resources. Its market coverage focuses primarily on end-user customers in East and South China. Relying on Qinghai Salt Lake’s logistics channels and Sinochem International’s distribution network, the company expands nationwide cooperation and provides customized magnesium-based functional material solutions and supply-chain collaboration support for emerging sectors including new materials, new energy, and advanced manufacturing.

Qinghai Qinghua Coal Chemical Co.,Ltd. is a large-scale coal chemical enterprise under Qinghai Qinghua Group Co., Ltd., with core operations centered on clean and efficient coal utilization, specializing in coking and resource-oriented extended industries. The company’s primary business covers the production and sales of coal chemical products—including coke, coke oven gas, coal tar, and crude benzene—as well as washing and processing of coking coal, waste heat and waste pressure power generation, and high-value-added resource utilization such as producing LNG and hydrogen from coke oven gas. Leveraging its 7.63-meter top-charging large捣固 coke ovens, two 50 MW high-temperature, high-pressure dry quenching coke waste heat power generation units, and a 120 million cubic meters/year coke oven gas-to-LNG facility (commissioned in 2022), the enterprise possesses an annual coke production capacity of 3 million tons and large-scale comprehensive utilization capability for coke oven gas, achieving a comprehensive utilization rate of coke oven gas exceeding 98%. The company holds the “Work Safety Production License,” “Pollutant Discharge Permit,” and “National Industrial Product Production License (Coke),” and has passed certifications for the ISO 9001, ISO 14001, and ISO 45001 management systems. Supporting facilities include dry quenching coke systems, flue gas desulfurization and denitrification systems, VOCs treatment systems, and advanced wastewater treatment and reuse systems; it is designated by Qinghai Province as a key atmospheric pollutant discharger. In terms of technological expertise, the company holds four authorized invention patents and 27 utility model patents, focusing on energy conservation and consumption reduction, coke oven gas purification, and resource-oriented utilization. Representative projects include the integrated SDA semi-dry flue gas desulfurization + SCR denitrification retrofit project for coke oven flue gas—listed in the “Qinghai Province Green Manufacturing Demonstration List”—and Qinghai Province’s first pilot application project for hydrogen production from coke oven gas: the Qaidam Basin coke oven by-product hydrogen purification and hydrogen supply demonstration project for hydrogen refueling stations. Its products primarily serve major Northwest steel enterprises such as Jiuquan Iron and Steel Group and Xining Special Steel Group, while also fulfilling Qinghai Province’s energy supply security responsibilities; LNG is fed into Qinghai’s natural gas pipeline network, and hydrogen is already being supplied in small batches to fuel cell bus demonstration routes in Haixi Prefecture. Collaboration opportunities encompass coordinated coking capacity development, resource-oriented utilization of coke oven gas (e.g., LNG, hydrogen), investment and operation of waste heat power generation, environmental protection technology upgrade projects, and deep processing of coking by-products.

Qinghai Fudi Lithium Energy Technology Co., Ltd. is a wholly owned subsidiary of BYD Company Limited, specializing in the research and industrialization of new energy materials. It serves as a key implementation entity supporting BYD’s “vertical integration + full-industry-chain layout” strategy in western China’s resource-rich regions. Leveraging Qinghai’s salt-lake lithium extraction industrial foundation, the company focuses on establishing a localized closed-loop system covering “salt-lake lithium extraction—lithium salt production—cathode material manufacturing—battery production.” Its core businesses include R&D, production, and sales of upstream critical materials such as lithium-ion battery cathode materials (primarily lithium iron phosphate), precursors, lithium carbonate, and lithium hydroxide, alongside concurrent development and industrial application of technologies for recycling spent lithium-ion batteries. Technologically, the company has established a core technical route centered on “direct lithium extraction from salt-lake brine coupled with short-process conversion,” having obtained one authorized invention patent, published twelve invention patents, and registered eight utility model patents; related research findings have been published in professional journals including *Salt Lake Research*. The company holds complete and compliant certifications, including the Work Safety Production License, Pollutant Discharge Permit, and Hazardous Chemicals Registration Certificate, and has passed certification under the ISO 9001, ISO 14001, and ISO 45001 management systems. Its Phase I project—a 100,000-ton-per-year lithium iron phosphate (LFP) cathode material production facility—commenced operations in October 2023; its Phase II project—including a pilot-scale salt-lake lithium extraction line and a high-nickel ternary precursor production line—is currently undergoing equipment installation and integrated commissioning. Its product LFP-2301 has passed third-party verification by CATL and EVE Energy, conforming to GB/T 30835 and UN 38.3 standards; it has supplied energy storage power station projects in Qinghai operated by China Energy Group and China Huadian Corporation, and exported samples to battery assembly plants in Thailand and Brazil, completing REACH registration and SGS certification. Currently, the company hosts both the Qinghai Provincial Enterprise Technology Center and a Postdoctoral Research Workstation, enabling pragmatic cooperation across fields including new energy material supply, salt-lake lithium extraction technology collaboration, customized cathode material development, collaborative battery recycling technology development, and regional industrial chain support.

Qingdao Ecos Technology Engineering Co., Ltd. Jilin Branch Jilin Branch is a branch established by Qingdao Yikesi Technology & Engineering Co., Ltd. in Jilin Province. Relying on the parent company’s qualifications as a National High-Tech Enterprise and a Science & Technology-Based Small Enterprise, the branch specializes in chemical technology development, engineering design, and specialized technical services, with a strategic focus on green chemical technologies—including low-carbon olefin production, comprehensive utilization of light hydrocarbons, and energy-saving and carbon-reduction process optimization. The company’s core business encompasses chemical technology development, technology transfer, technical consultation, and technical services, as well as licensed services such as chemical engineering design, environmental protection engineering design, pressure piping (GC category) design, and pressure vessel (Class A1/A2) design. The parent company holds Class-A specialized design qualifications for the chemical, petrochemical, and pharmaceutical industry (chemical engineering) (Certificate No.: A137001272), Grade-B engineering consulting credentials (chemical sector), and ISO 9001 quality management system certification. It also owns over ten relevant invention patents and utility model patents, including “Catalyst for Propane Dehydrogenation to Propylene and Preparation Method Thereof” and “High-Efficiency Energy-Saving Heat Recovery System for MTO Reaction.” Representative projects include specialized process package development and engineering design for large-scale integrated refining & petrochemical projects undertaken by Sinochem Quanzhou, Hengli Petrochemical (Dalian), Zhejiang Petrochemical, and Wanhua Chemical; the branch has also participated in safety risk assessments and process compliance diagnostics for chemical industrial parks within Jilin Province. All external business activities of the branch are conducted under the parent company’s qualifications and brand, serving clients nationwide—with particular emphasis on supporting the industrial upgrading and green transformation of the chemical industry in Northeast China. The branch offers end-to-end collaborative solutions covering technology R&D, process package design, selection of key equipment, and engineering implementation support.

Qingdao Kaineng Environmental Protection Technology Co., Ltd. (Securities Abbreviation: Kaineng Technology; Securities Code: 837949) is a high-tech enterprise specializing in research, development, and industrial application of energy-saving and environmental protection technologies, positioned in the field of energy-saving technology equipment and services. The Company’s core businesses encompass waste heat and pressure utilization, industrial energy-saving system integration, flue gas treatment, solid waste resource recovery, and intelligent energy management, providing end-to-end energy-saving and carbon-reduction solutions for high-energy-consumption industries such as metallurgy, building materials, and chemical manufacturing. Leveraging 12 invention patents and 47 utility model patents, the Company has developed core technologies including “Multi-Source Waste Heat Cascaded Recovery Coupled Power Generation Technology” and “AI Algorithm-Based Dynamic Energy Efficiency Optimization System for Industrial Kilns.” These technologies have been successfully applied in representative projects such as the 120 MW sintering waste heat power generation EPC project for a steel group in Shandong Province, the preheater waste heat boiler energy-saving retrofit project for a cement enterprise in Inner Mongolia, and the deep waste heat recovery system for flue gas at a glass factory in Jiangsu Province. Its services cover over ten provinces, including Shandong, Hebei, Inner Mongolia, Jiangsu, and Henan. The Company holds Grade-B qualification for specialized design of environmental engineering (air pollution control engineering) and Grade-III qualification for professional contracting of architectural mechanical and electrical installation engineering. It is also certified under ISO 9001 Quality Management System, ISO 14001 Environmental Management System, and ISO 45001 Occupational Health and Safety Management System. Currently, the Company offers diversified cooperation models—including energy-saving diagnostics, technical solution design, supply of core equipment, EPC project implementation, and construction of intelligent energy management platforms—to industrial enterprises, industrial parks, and engineering general contractors.

Qingdao Joinsyn Technology Co., Ltd. is a science and technology-based small- and medium-sized enterprise specializing in the research and development of high-performance thermoplastic engineering plastics and composite modification, as well as small-batch pilot production. The company operates at the interface between new material technology R&D and industrial application, focusing on formulation design, blending alloying, and process adaptation for specialty engineering plastics such as polyphenylene sulfide (PPS) and polyether ether ketone (PEEK). Its core business includes manufacturing and sales of high-performance fibers and composite materials; R&D and production of engineering plastics and modified plastics; processing of rubber and metal products; and related technology and goods import/export. Its technological achievements are primarily reflected in high-temperature-resistant, anti-creep PPS composites and carbon nanotube-reinforced PPS/PEEK blended alloys. The company has filed two invention patents (both currently under substantive examination) and one utility model patent (“A Vacuum Vibratory Fluidized Bed Device for Drying Modified Plastic Granules”), demonstrating an integrated technical capability spanning material formulation to supporting equipment development. The enterprise is currently in the technology incubation and product validation stage, providing customized, non-standard modified material solutions for sectors including automotive lightweighting, electronic packaging, and high-end equipment manufacturing. Although it has not yet obtained certifications such as High-Tech Enterprise, “Specialized, Refined, Distinctive, and Innovative” (Zhuan Jing Te Xin), or ISO system accreditation, nor does it possess publicly disclosed large-scale mass-production facilities, revenue data, or representative customer case studies, its operations comply with regulations, its registration status is “in operation,” and it has no judicial risk records. Its service region is concentrated domestically, with no evident signs of cross-regional or international business expansion. Practical collaboration opportunities exist in areas including joint technology development, customized material pilot production, process optimization support, and import-substitution material solutions.

Qikong Tanqing (Tangshan) Environmental Technology Co., Ltd. is a technology-based small- and medium-sized enterprise specializing in industrial carbon emission reduction and comprehensive environmental governance. Based in Tangshan, the company serves energy-intensive industries—including iron and steel, coking, and building materials—in southern Hebei Province, and is committed to promoting synergistic pollution control and carbon reduction in key industries. Its core businesses include carbon emission monitoring and accounting technical services, collaborative treatment of multiple pollutants in industrial flue gas, low-carbon process optimization consulting, and research & development and sales of environmental protection equipment. Its technological applications focus on carbon efficiency assessment and end-of-pipe treatment synergy scenarios within the iron and steel industry. Its core competencies include customized development of localized, process-level carbon accounting models and experience integrating industrial field data interfaces; it has independently developed the lightweight carbon flow analysis tool “CarbonLink-1.0”, which supports integration with existing DCS systems and enables hourly carbon intensity output. The company has been included in the Tangshan Municipal Ecological Environment Bureau’s “Recommended List of Technical Service Providers for Pollution Control and Carbon Reduction in Key Industries (Trial)” and participated in drafting and publishing the group standard “Guidelines for Process-Level Carbon Emission Accounting for Iron and Steel Enterprises in Tangshan City (T/TSIA 027–2025)”, providing practical technical support for local carbon management. It previously served as a consortium member in the Tangshan Port Group’s enclosed bulk cargo terminal VOCs + dust intelligent monitoring system construction project, responsible for carbon emission data modeling and dynamic accounting module development. Currently, the company is focused on regional market entry and technology validation; no inter-provincial service or international business activities have been publicly recorded. It offers technical consulting, module development, co-development of standards, and joint solution delivery to industrial enterprises, industrial parks, and large-scale infrastructure operation entities requiring digital carbon management, end-of-pipe treatment upgrades, or low-carbon process optimization.

Poma (Shanghai) Environmental Technology Co., Ltd. is a high-tech enterprise specializing in industrial water treatment and environmental system integration solutions, dedicated to providing full-cycle water system optimization services to high-end manufacturing clients in sectors including electronic semiconductors, biopharmaceuticals, new-energy batteries, and fine chemicals. The company’s core business encompasses the design, research & development, equipment integration, and engineering implementation of reclaimed water reuse systems, zero-liquid-discharge (ZLD) systems for high-concentration wastewater, intelligent management and control systems for industrial circulating cooling water, membrane-based advanced treatment systems, and associated automated control systems. Leveraging a technical approach that combines multi-unit coupled processes (e.g., UF+RO+EDR+MVR staged concentration routes) with digital energy-efficiency management, the company offers integrated capabilities spanning process design, selection of core equipment (including proprietary anti-fouling reverse osmosis and specialty nanofiltration membrane elements), PLC/DCS automatic control programming, and commissioning & operation & maintenance. It holds four authorized invention patents, eleven utility model patents, and three software copyrights; representative achievements include the “PM-WaterPro Intelligent Diagnostic Platform for Industrial Water Treatment V1.0.” In terms of qualifications, the company holds Grade III specialized contracting qualification for environmental engineering projects and a Work Safety Production License, and has passed certifications under ISO 9001, ISO 14001, and ISO 45001 management system standards. Its core water treatment equipment has obtained the Hygienic Permit for Products Related to Drinking Water (Shanghai Health Water Permit No. 2024-XXXX). In recent years, the company has successfully delivered several projects, including: a 1,200-ton-per-day high-salinity wastewater MVR evaporation-crystallization system for a semiconductor materials enterprise in Suzhou; a classified, quality-specific treatment and nickel-cobalt resource recovery project for electroplating wastewater at a power battery manufacturing plant in Wuxi; and an upgraded purified water system EPC project for a CDMO pharmaceutical enterprise in Zhangjiang, Shanghai. All projects are concentrated in the Yangtze River Delta region, and cooperation models cover EPC general contracting, process package supply, supply of core equipment, intelligent upgrades, and customized operation & maintenance services.

Pucheng Clean Energy Chemical Co., Ltd. is a large-scale, modern coal chemical enterprise jointly controlled by Shaanxi Coal Industry and Chemical Group and with equity participation from State Power Investment Corporation. It is designated as a key energy and chemical project under Shaanxi Province’s “12th Five-Year Plan” and a demonstration project supported by the State’s “Petroleum and Chemical Industry Layout Planning Scheme.” Focusing on the development pathway of “clean and efficient conversion, high-end and fine-value-added extension,” the company has entered a stage of large-scale, stable operation. Using coal as its primary feedstock, the company employs an integrated process chain—including coal gasification, gas purification, methanol synthesis, and olefin polymerization—to professionally produce methanol, polyethylene (PE), polypropylene (PP), and downstream high-value-added chemical products, which are widely applied in mid- to high-end sectors such as automotive components and medical packaging. Leveraging its independently integrated DMTO-II (second-generation industrial methanol-to-olefins) plant, the company operates a 1.8-million-ton-per-year methanol production facility and a 600,000-ton-per-year polyolefin production facility, and has constructed China’s largest single-train 2-million-ton-per-year methanol-to-olefins plant. Concurrently, it operates two 350-MW ultra-supercritical coal-fired power generation units and an integrated heat-and-power system, achieving cascaded energy utilization and optimized process integration. The company holds 12 authorized invention patents and 38 utility model patents; its core process package has passed technological achievement appraisal by the China Petroleum and Chemical Industry Federation, and its energy efficiency meets the advanced-level requirements stipulated in national standard GB 30180-2023. It has obtained certifications for ISO 9001, ISO 14001, and ISO 45001 management systems, and holds all legally mandated qualifications, including the Safety Production License for Hazardous Chemicals, the Pollutant Discharge Permit, the Water Withdrawal Permit, and the Special Equipment Use Registration Certificate. In 2022, it was recognized as a National Green Factory and included in Shaanxi Province’s Green Manufacturing List. Its business spans over ten provinces—including Shaanxi, Shanxi, Henan, Shandong, and Jiangsu—and it is deeply integrated into the construction of the Western Energy and Chemical Corridor, providing upstream and downstream industrial chain partners with high-quality polyolefin specialty materials, technical collaboration, green and low-carbon solutions, and stable, reliable supplies of chemical raw materials.