(July 28, 2026)Divergence of technical routes intensifies, and fumed silica enters a critical window for domestic import substitution. Driven by the continuous expansion of high-value-added sectors including electronic silicone rubber, lithium batteries, photovoltaic encapsulation and pharmaceutical materials, market demand for high-purity nano silicon dioxide is rising rapidly. Precipitated silica serves traditional sectors such as tires and general coatings with steady technical upgrading. As high-end functional powder, fumed silica is accelerating the shift away from long-term reliance on imports. The two technical routes follow differentiated development paths, and hierarchical competition within the industry becomes increasingly evident.
For a long time, precipitated silica accounts for the majority of domestic silica capacity, with products mainly supplied to general markets such as rubber reinforcement, industrial matting and plastic filling. The production of fumed silica features high technical barriers and huge capital investment in facilities. Only a limited number of domestic enterprises operate large-scale mass production lines. High-end hydrophobically modified grades and electronic-grade products have long been dominated by overseas brands with high import costs, restricting the development of domestic high-end new material industries. Thanks to the improved domestic silicone industrial chain, stronger supporting capacity of chlorosilane raw materials and years of technical accumulation, a group of domestic enterprises have achieved breakthroughs in core production and surface modification technologies for fumed silica, and local fumed silica capacity is entering a phase of concentrated release.
In the second half of 2026, construction and technical renovation projects of fumed silica across multiple regions are moving forward at a faster pace. A new materials enterprise in East China is carrying out equipment installation for its 25,000 tons/year high-purity fumed silica expansion project. It focuses on developing hydrophobic products with high specific surface area for power battery sealants and optical silicone rubber. A fumed silica production line matched with an integrated silicone base in Southwest China has passed pilot verification. The line specializes in low-impurity food and pharmaceutical-grade products and is scheduled to launch trial production within this year. Similar to the policy control on low-end varieties for newly added precipitated silica capacity, all planned new fumed silica projects target high-end segmented tracks instead of low-value general hydrophilic products.
Structural differences in demand further widen prosperity gaps between the two routes. The precipitated silica market faces sufficient competition, and industrial growth is mainly driven by new energy vehicle green tires and degradable plastics. Competition centers on dispersibility, low-carbon indicators and cost control. Downstream demand for fumed silica sees growth across multiple fields. Incremental demand keeps emerging in lithium battery separator coatings, photovoltaic EVA films, semiconductor epoxy encapsulation materials, high-end cosmetics and pharmaceutical excipients. Downstream clients pay more attention to batch stability, purity control and dispersion performance with relatively low price sensitivity, bringing significantly better profit margins than general precipitated silica products.
Domestic fumed silica products are accelerating access to supply chains of leading downstream manufacturers, yielding steady results in import substitution. Previously, many new material and electronic manufacturers preferred imported fumed silica. Nowadays, more producers launch sampling and evaluation of domestic alternatives. With continuous process optimization, domestic high-end fumed silica is narrowing the performance gap with overseas counterparts. Supported by advantages including localized technical services and shorter delivery cycles, domestic products gradually achieve bulk substitution. Nevertheless, industry insiders point out that ultra-high-purity electronic-grade and special low-hydroxyl fumed silica still maintain technical barriers, and continuous R&D investment is required to realize full-category substitution.
Objective challenges remain. Fumed silica facilities require massive investment and consume high levels of energy, imposing strict requirements on enterprises in terms of capital strength, energy supply and environmental governance capabilities. Blind investment in fumed silica projects by small-scale investors may trigger risks such as immature processes, substandard product indicators and difficulties in developing end markets. Meanwhile, overseas material enterprises keep expanding layout in the Asia-Pacific market, competing with established brands and complete certification systems. Domestic fumed silica manufacturers cannot rely merely on price competition. They need to deepen modification technology research and build comprehensive global compliance qualifications.
Industrial research institutions forecast that the next three years will be the most important development stage for the domestic production of fumed silica. The precipitated silica track centers on green manufacturing, low-carbon processes and customized reinforcement solutions; the fumed silica track focuses on high-purity production technology, surface modification and high-end customer certification. The two tracks evolve independently and develop in parallel. With the orderly launch of domestic high-end fumed silica capacity, sustained technological breakthroughs and long-term growth of downstream new material industries, the market share of domestic fumed silica will rise steadily.
In the long run, the comprehensive high-quality development of China’s silica industry requires coordinated upgrading of both technical routes. Precipitated silica should advance low-carbon transformation and specialization to consolidate advantages in traditional markets; fumed silica needs to overcome technical bottlenecks for high-end grades and expand achievements in import substitution. Through differentiated technical layout, the industry can escape homogeneous low-price competition and jointly drive China’s silicon dioxide industry to shift from scale advantages to technological and quality advantages.