Public notice prior to approval application for the technical upgrade project of Qingliu Sanmei Co., Ltd. in Fujian Province, aiming to achieve an annual production capacity of 60,000 tons of electronic-grade hydrogen fluoride

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Public Notice Prior to Submission for Approval of Sanmei’s Project to Increase Annual Production of 60,000 Tons of Electronic-Grade Hydrogen Fluoride 2025-11-14 15:11:44 On November 12, Dongying Chemical Co., Ltd. in Qingliu County, Fujian Province (a wholly-owned subsidiary of Sanmei) published a public notice prior to submitting the environmental impact assessment report for its project aimed at increasing annual production of 60,000 tons of electronic-grade hydrogen fluoride. The details of the project are as follows: Project name: Dongying Chemical’s capacity expansion project for producing 60,000 tons of electronic-grade hydrogen fluoride per year. Developer: Fujian Qingliu County Dongying Chemical Co., Ltd. Location: Daliukou area of the Fluorine New Materials Industrial Park in Qingliu County. Project investment: 20 million yuan. Nature of the project: Renovation. Scope of construction: The project design involves adding oxidation pretreatment and distillation purification units to two of the three existing hydrofluoric acid production lines in the new plant (30,000 tons per line; Lines AHF 2 and 3, which have passed the environmental compliance inspections, will be used as references for this purpose), thereby upgrading these facilities from those for producing anhydrous hydrogen fluoride to those capable of producing electronic-grade hydrogen fluoride ； The plant, which was originally designed to produce 60,000 tons of anhydrous hydrogen fluoride per year, along with 8,000 tons of by-product fluorosilicic acid (40%) and 227,000 tons of by-product fluorogypsum, has been modified to produce 60,000 tons of electronic-grade hydrogen fluoride per year, 8,000 tons of by-product fluorosilicic acid (40%), 2,500 tons of by-product hydrofluoric acid (30%), and 227,000 tons of by-product fluorogypsum. Project timeline: Construction is expected to begin in January 2026, with completion and operation starting in October 2027; the construction period will be 22 months.