May 15, 2026 – The global semiconductor wafer industry is undergoing a profound transformation in 2026, driven by China’s aggressive localization push, surging AI-related demand, and strategic readjustments by international giants. As the competition for advanced manufacturing capabilities heats up and mature process capacities are reallocated globally, the industry is stepping into a new era of regional rivalry and technological innovation, with 12-inch silicon wafers emerging as the core battlefield for market dominance.
According to the latest quarterly report from SEMI’s Silicon Manufacturers Group (SMG) released on April 29, worldwide silicon wafer shipments rose 13.1% year-on-year to 3,275 million square inches (MSI) in the first quarter of 2026, while declining 4.7% sequentially due to typical seasonal fluctuations. Ginji Yada, Chairman of SEMI SMG and Managing Executive Officer at SUMCO Corporation, emphasized that demand for AI data center-related silicon wafers remains robust, spanning advanced logic, memory chips, and power management devices, which is driving a broader industry recovery as inventory levels normalize[5].
A key trend reshaping the industry is China’s determined pursuit of self-sufficiency in 12-inch silicon wafers, a critical component known as the "first cornerstone" of the chip manufacturing industry. Currently, China’s monthly demand for 12-inch wafers exceeds 3 million units, accounting for about one-third of global total demand, but its localization rate stands at only around 42%, with nearly 60% of supply relying heavily on imports, predominantly from Japanese manufacturers[1]. To address this gap, Chinese authorities have set a strategic target to raise the localization rate of 12-inch silicon wafers to over 70% by 2030, with 2026 marking a critical year for capacity expansion and technological breakthroughs[1].
Domestic leading enterprises are at the forefront of this localization drive. Eswin Material Technology, a top Chinese wafer manufacturer, projects its monthly 12-inch wafer capacity will reach 1.2 million units by the end of 2026, sufficient to meet nearly 40% of China’s domestic demand and secure a global market share exceeding 10%[1]. The company already supplies wafers to global giants including Micron Technology, TSMC, and GlobalFoundries, with Samsung Electronics and SK Hynix also evaluating its products for potential integration into their Chinese facilities. Its rapid growth is supported by a combination of government guidance, capital empowerment, and industry-university-research collaboration, which has helped address key bottlenecks in equipment and talent[1].
Other domestic players are also making significant strides in both capacity and certification. Shanghai Silicon Industry, China’s largest 12-inch wafer producer, sold 6.4163 million 300mm wafers in 2025, a 27.01% year-on-year increase, with its products passing 28nm full-process verification by SMIC and completing R&D validation for 14nm logic chips[1]. The company plans to expand its monthly capacity to 2 million units by 2027 and 3 million units by 2030, aiming to rank among the world’s top three 12-inch wafer suppliers[1]. Leon Micro became the first domestic firm to mass-supply automotive-grade 12-inch wafers, which have earned AEC-Q100 certification and entered the supply chains of BYD and NIO, further boosting domestic substitution in the automotive electronics segment.
Internationally, the industry is dominated by a duopoly of Japanese manufacturers, Shin-Etsu Chemical and SUMCO, which together control over 60% of the global 12-inch wafer capacity[1]. Shin-Etsu, the world’s largest semiconductor wafer supplier, has a monthly capacity of about 3 million 12-inch wafers in 2026, accounting for nearly 30% of the global market share, and its products are deeply integrated into the supply chains of Samsung and SK Hynix for advanced 3nm and 2nm processes[1]. SUMCO follows closely with a 25% global share, excelling in heavily doped wafers and automotive-grade wafers, and maintains long-term stable cooperation with TSMC and Intel[1].
Meanwhile, global capacity expansion is accelerating, with an estimated 2 million additional monthly 12-inch wafer capacity to be added between 2026 and 2027, equivalent to more than 20% of the current global total[3]. International giants are also adjusting their strategies: Wolfspeed recently announced a major breakthrough in 300mm SiC wafers, enabling scalable platforms for AI, AR/VR, and advanced power devices[4]. Samsung has advanced the launch of its P4 plant in Pyeongtaek, a dedicated HBM4 DRAM production line, by three months to the fourth quarter of 2026, aiming to challenge SK Hynix’s dominance in the HBM market[3].
Industry analysts note that 2026 is a pivotal year for the global semiconductor wafer industry. While China’s localization drive is creating new growth momentum, domestic enterprises still face challenges such as high depreciation costs, downward price pressure, and structural imbalances between mature and advanced processes[1]. Looking ahead, the global 12-inch wafer market is expected to undergo further restructuring, with regional supply chains becoming more localized and technological competition focusing on advanced nodes and special materials, shaping the industry’s trajectory for the next decade.