Sulfur Dioxide Commodity Market Dynamics Intelligence and Analysis Forecast

I. Price Dynamics
1. Industrial-Grade Sulfur Dioxide: Prices have remained stable recently, with mainstream manufacturers maintaining quotations at RMB 3,000 per ton, showing no significant fluctuation.
2. Electronic-Grade Sulfur Dioxide: Prices continue to rise—market prices in 2025 increased by 6.2% year-on-year versus 2024, reaching RMB 284,000 per ton. The market size is projected to reach RMB 970 million in 2026, representing a 12.8% growth over 2025; price appreciation contributes approximately 49% to the overall market expansion.

II. Supply-Demand Landscape
1. Supply Side:
- Industrial-Grade Sulfur Dioxide: Supply remains stable, primarily sourced from thermal power generation, steel, and cement industries. As environmental regulations tighten, these sectors have significantly increased investments in desulfurization infrastructure, leading to steady growth in sulfur dioxide output.
- Electronic-Grade Sulfur Dioxide: Supply capacity is gradually expanding. Currently, only four domestic enterprises possess mass-production capability for electronic-grade sulfur dioxide. Among them, Jinghong Gas achieves stable annual production of 300 tons and has passed full-process validation by SMIC (Semiconductor Manufacturing International Corporation); Huateng Gas has established China’s first dedicated ultra-clean filling line for sulfur dioxide, achieving impurity control levels of ≤5 ppt for metallic ions.

2. Demand Side:
- Industrial-Grade Sulfur Dioxide: Demand grows steadily, primarily driven by applications in sulfur production and sulfuric acid manufacturing. Rapid development of the sulfuric acid industry has led to increasing annual demand for sulfur dioxide. Additionally, comprehensive utilization of desulfurization gypsum provides a new source of incremental demand.
- Electronic-Grade Sulfur Dioxide: Demand is experiencing explosive growth, fueled by rapid expansion of the semiconductor industry and increasingly stringent purity requirements in advanced manufacturing processes. SMIC’s Beijing Lingang 12-inch fab has entered the equipment installation phase, targeting a planned monthly capacity of 50,000 wafers; bulk adoption of sulfur dioxide for silicon wafer cleaning and oxidation processes is expected to commence in Q2 2026. Yangtze Memory Technologies’ (YMTC) Wuhan Phase II facility has completed its environmental impact assessment approval, explicitly specifying adoption of an advanced wet-etching integration scheme—sulfur dioxide serves as a critical auxiliary gas, with per-wafer consumption rising 22% compared to prior-generation processes.

III. Key Market Drivers
1. Policy Support: The Chinese government has introduced a series of policies to reduce and control sulfur dioxide emissions—including the “Air Pollution Prevention and Control Action Plan” and the “Comprehensive Program for Energy Conservation and Emission Reduction”—which have played a pivotal role in standardizing and guiding industry development. Simultaneously, the Ministry of Industry and Information Technology’s “Catalogue of Priority Applications for First-Batch Key New Materials (2024 Edition)” designates electronic-grade sulfur dioxide as a priority procurement material; local governments further reinforce supply capacity through specialized technical upgrading subsidies for regional electronic specialty gas enterprises.
2. Technological Advancement: Flue gas desulfurization (FGD) and denitrification technologies continue maturing, effectively lowering sulfur dioxide emission concentrations. Moreover, application of novel green production techniques and breakthroughs in resource comprehensive utilization technologies have enhanced sulfur dioxide production efficiency and resource utilization rates.
3. Growing Market Demand: With rapid development of the semiconductor and electronics industries, demand for electronic-grade sulfur dioxide continues surging. Globally, electronic-grade sulfur dioxide sales are projected to reach USD 30 million by 2030, growing at a compound annual growth rate (CAGR) of 20.0%.

IV. Competitive Landscape
1. Industrial-Grade Sulfur Dioxide: Competition remains intense, yet supply-demand balance is broadly maintained. Some small- and medium-sized enterprises face pressure toward consolidation or exit, driving gradual optimization of the supply structure.
2. Electronic-Grade Sulfur Dioxide: Market concentration is high, with CR4 (combined market share of the top four firms) reaching 81.6%, markedly up from 63.2% in 2023. Leading enterprises—including Jinghong Gas, Huateng Gas, and Kemate Gas—have rapidly entered the market via technology transfer and strategic asset acquisitions, establishing robust technological barriers and strong customer stickiness.

V. Analysis, Outlook & Forecast
1. Price Trend Forecast:
- Industrial-Grade Sulfur Dioxide: Prices are expected to remain stable in the short term. However, long-term pricing may exhibit upward volatility, influenced by evolving environmental policies and shifts in market demand.
- Electronic-Grade Sulfur Dioxide: Prices are likely to continue rising amid sustained demand growth and gradual supply capacity expansion—though the pace of increase is expected to moderate over time.

2. Supply-Demand Outlook:
- Industrial-Grade Sulfur Dioxide: Overall supply-demand equilibrium will be maintained, though regional imbalances may cause localized supply-demand tensions. Stricter environmental standards and industrial upgrading will further optimize the supply structure.
- Electronic-Grade Sulfur Dioxide: Demand will continue climbing while supply capacity expands incrementally. Nevertheless, high technical barriers and substantial capital investment requirements will drive further market concentration, enabling leading firms to capture larger market shares.

3. Market Development Trends:
- Green Transformation and Sustainable Development: With tightening environmental regulations and accelerated progress toward China’s dual-carbon goals (“carbon peak” and “carbon neutrality”), the sulfur dioxide industry will accelerate technological upgrades toward low-emission, high-efficiency solutions. Penetration rates of wet FGD technology and circular utilization processes are projected to exceed 60%.
- Technological Innovation and International Expansion: Enterprises will intensify R&D efforts to explore novel applications—for instance, sulfur dioxide use in new-energy batteries and fine chemical synthesis. Concurrently, internationalization—through overseas partnerships, production bases, or market expansion—will become a vital strategic pathway for enhancing global competitiveness.