The plastics and low-smoke zero-halogen (LSZH) cable industry remains the largest end-user market, accounting for over 44% of total global demand, where high-purity magnesium hydroxide is highly valued for its excellent thermal stability, high smoke suppression capability, non-toxicity and good dimensional shrinkage stability. It is widely used in high-grade engineering plastics, wire and cable sheathings, and impact-resistant automotive interior components, which can effectively improve the heat resistance, safety and mechanical toughness of polymer products, reducing the defective rate of finished products. The continuous upgrading of consumption in East Asia, Europe and North America has accelerated market penetration, especially in the field of high-end consumer electronics and automotive decoration plastics.

In the environmental protection and functional coating industry, more water treatment developers and coating producers are integrating synthetic precipitated magnesium hydroxide into industrial wastewater neutralization, flue gas desulfurization (FGD) and fire-retardant coatings thanks to its high acid-neutralizing capacity, low abrasiveness and low corrosiveness. It can replace hazardous caustic soda or lime as a green neutralizing agent, significantly improving the safety, leveling and heavy metal adsorption of treatment processes while reducing comprehensive operating costs, which perfectly meets the production requirements of municipal engineering and low-carbon environmental protection coatings, and is certified to comply with relevant global environmental and industrial safety regulations.

In emerging high-value fields, the application scale of modified high-purity magnesium hydroxide is expanding rapidly. In the new energy industry, ultrafine magnesium hydroxide powder is used as a high-performance flame-retardant filler for electric vehicle (EV) battery packs and casings and a key thermal management additive for energy storage systems, which can improve the thermal runaway protection and cycle life of batteries. In the field of healthcare and daily chemicals, refined pharmaceutical-grade magnesium hydroxide is used as a safe antacid in gastrointestinal medicines, gentle pH regulators in cosmetics and high-purity daily chemical additives due to its good biocompatibility, non-hazardous nature and heavy density.

Technological innovation is continuously reshaping the industry’s product system. A new generation of ultra-fine surface-modified high-purity magnesium hydroxide has entered the market, featuring average particle size below 1.5μm, heavy metal impurity removal rate over 99.6%, and optimized surface compatibility, which can better meet the high-precision requirements of high-end manufacturing. These innovative modified products have begun to gain large-scale adoption in high-value segmented fields, including high-end electronic circuit substrates, ultra-thin flame-retardant films, and high-performance lithium battery thermal barriers, where purity, environmental protection and structural stability are core requirements.

Sustainability is the core endogenous driving force for market growth. Unlike general functional fillers that rely on high-emission chemical synthesis, high-purity magnesium hydroxide can be produced through low-emission precipitation of rich brine/seawater or brucite minerals, with optimized energy consumption in the purification process. Currently, over 80% of the industry’s leading production enterprises have implemented green mining management, wet-process energy-saving precipitation technology, and by-product comprehensive recycling systems, which greatly reduces the environmental impact of the production process. Most mainstream high-purity products have obtained ISO 14001 environmental management certification, RoHS non-toxic certification and REACH compliance, further consolidating their competitive advantage in the green functional material market.

The maturity of the global supply system has improved significantly in recent years. Mainstream head enterprises have expanded vertical integration from raw mineral/brine extraction to deep processing and modification of finished products, and built regional processing and distribution centers in major demand markets such as China, North America and Western Europe, which has effectively shortened the supply cycle. However, the industry still faces some challenges, including uneven grade of raw ore from different mining areas, increasingly strict purity and heavy metal limit standards in Europe and North America, and rising transportation costs for bulk mineral products. In response, leading enterprises are increasing investment in intelligent automatic chemical synthesis production lines, high-value modification technology research and development, and digital supply chain management systems, to stabilize product quality and reduce comprehensive operating costs.