Chuanwengfu Technology Co., Ltd.’s project for producing 30,000 tons/year of high-purity anhydrous hydrogen fluoride and 20,000 tons/year of high-purity hydrofluoric acid

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The 25th National “Safety Production Month” in 2026: Everyone talks about safety; everyone knows how to respond to emergencies. Identify and rectify potential risks and hazards. -------------------------------------------------- I. Basic Overview of the Project 1. Full project name: 30,000-ton/year high-purity anhydrous hydrogen fluoride and 20,000-ton/year high-purity hydrofluoric acid project 2. Construction entity: Sichuan Wengfu Technology Co., Ltd. (a subsidiary of Wengfu Group) 3. Construction location: Binlang Chemical Industrial Park, High-Tech Zone, Dazhou City, Sichuan Province (within Wengfu Dazhou’s existing chemical production base) 4. Project code: 2501-511726-99-01-935739 5. Total investment: Approximately 532 million yuan, including 6.9 million yuan allocated for environmental protection measures 6. Nature of the project: A newly constructed circular-economy-based fluorine chemical project 7. Raw material sources: The project utilizes fluorosilicic acid generated as a by-product during the wet-process production of phosphoric acid at Wengfu Dazhou within the park; any shortfall in raw materials is supplied by Guizhou Liphosphat Fqian and Xifeng bases. 8. Product plan – Main products: 30,000 tons/year of high-purity anhydrous hydrogen fluoride and 20,000 tons/year of UP-S grade high-purity hydrofluoric acid (equivalent to E3 grade electronic-grade hydrofluoric acid, used for semiconductor cleaning and etching). – By-products: 1.191 million tons/year of sulfuric acid, which can be transported via pipelines back to upstream phosphoric acid production facilities for reuse； Recovery of silica filter residue as a defluorinating agent for phosphoric acid 9. Construction contents: main hydrogen fluoride/hydrofluoric acid production facility, finished product storage and transportation tank area, sulfuric acid/fluorosilicic acid tank groups, supporting utility systems, process pipelines, environmental protection and safety facilities 10. Key approval milestones – Completion of project registration and approval for environmental impact assessment (Da Shi Huan Shen [2026] No. 7) – Approval for energy efficiency review by the Sichuan Provincial Development and Reform Commission was obtained on June 3, 2026, securing the essential approval procedures 11. Process advantages: Energy consumption per unit of product is lower than the advanced levels in the industry; it represents a low-carbon, green manufacturing process II. Tendering and procurement situation The EPC contract for this project is undertaken by Hualu Engineering Technology Co., Ltd. All equipment and materials are procured through China Chemical’s “Chemical Cloud Procurement” electronic bidding platform, with open negotiations and public tenders being the primary methods: 1. Tendering entity: The general contractor, Hualu Engineering Technology Co., Ltd. 2. Procurement lots that have been or are currently being carried out (as of June 2026) – 30t/h gas boilers and associated utility equipment (public tender via the Dazhou Public Resources Trading Center) – GDS systems and detectors for flammable and toxic gases (negotiated procurement completed, winning bidder announced) – Equipment with steel linings and anti-corrosion pipeline systems (procured through open negotiations) – Subsequent tenders will be held for reaction equipment, distillation towers, storage tanks, instrumentation and valves, electrical systems, fire protection and environmental protection equipment, etc. 3. Tendering method: Public tenders for key equipment ； For non-standard and small-sized instrumentation equipment, competitive negotiation is employed ； Consortia bids are not accepted; for each brand, only one agent is permitted to submit a bid. 4. Funding situation: The funds for project construction have been secured, and the tender documents specify that the delivery period is generally around 90 calendar days. III. Construction Progress
1. Current phase (June 2026): The project has completed all mandatory approval procedures and is currently in the preliminary stages of procurement and site preparation. The bidding process for major civil construction and installation works has not yet been launched on a large scale; thus, large-scale on-site construction has not commenced. 2. Construction conditions: Utilize the existing land within the Wengfu Dazhou industrial park, utility infrastructure networks, and wastewater treatment facilities. Relying on existing roads and warehousing facilities will significantly reduce the investment required for constructing supporting infrastructure. 3. Construction control requirements: Fluorine chemistry is a high-risk segment of fine chemicals; subsequent construction must comply with special safety regulations for the chemical industry ； Equipment anti-corrosion, airtightness testing, and welding of pipelines carrying toxic media require high standards ； Synchronized with safety instruments, emergency absorption systems, and environmental protection facilities for waste gas treatment. 4. Expected construction period: The construction period for similar HF production facilities using Wengfu fluorosilicic acid is approximately 12–18 months; once all equipment arrives and civil work begins, equipment installation, pressure testing, and commissioning will be carried out in an orderly manner. IV. Significance of the Project 1. Significance of resource recycling: It enables the high-value utilization of fluorine resources associated with phosphate mines, transforms the fluorosilicic acid generated as a by-product of wet-process phosphoric acid production into a valuable resource, and recycles by-products such as sulfuric acid and silica slag. By establishing a closed-loop industrial chain of “phosphate mines – phosphoric acid – fluorosilicic acid – high-purity fluorine chemicals,” it significantly reduces the environmental management challenges associated with phosphate chemical processing; it is a typical model project for a phosphorus-fluorine integrated circular economy. 2. Significance of the industrial supply chain: The project produces E3-grade electronic-grade hydrofluoric acid, thereby filling the gap in the production capacity of high-end electronic fluorine chemical raw materials in the Southwest region. It also reduces China’s reliance on imported high-end hydrofluoric acid for its semiconductor and photovoltaic industries, facilitating the domestic substitution of key electronic chemicals and serving the country’s chip and photovoltaic new energy industries. 3. Regional economic significance: By establishing the facility in the Dazhou High-Tech Zone’s chemical industry park, it will extend Wengfu Dazhou’s existing phosphorus chemical industry chain, increase the added value of products, foster the development of the fine chemical and new material industry in Dazhou, generate employment and tax revenues through related industries in this chain, and facilitate the transformation of traditional phosphorus chemistry into high-end new materials. 4. Significance for green and low-carbon development: The project’s energy consumption and carbon emission indicators exceed industry standards. By employing a closed-process system and exhaust gas recovery devices, it reduces pollutant emissions at the source. This aligns with Sichuan Province’s industrial policies promoting green chemical manufacturing as well as energy conservation and carbon reduction, thus providing a replicable model for the transformation of phosphate chemical parks in central and western China. 5. Strategic significance for the enterprise: Wengfu Group enhances its nationwide presence in the field of phosphorus-fluorine new materials, develops mature processes for producing high-purity electronic chemicals from fluorosilicic acid, and thereby boosts its competitiveness in China’s high-end fluorine chemical market.