Electron beam inspection and metrology equipment is a category of high-end semiconductor front-end tools that scan wafers, photomasks or semiconductor microstructures using a high-energy focused electron beam. By capturing signals generated from electron-matter interactions, including secondary electrons, backscattered electrons and voltage contrast, these systems enable nanoscale defect detection, defect review analysis and precision measurement of critical dimensions. Its core product matrix mainly consists of three categories: Electron Beam Inspection (EBI) for identifying nanoscale physical and electrical defects that are difficult to detect with optical inspection tools; Defect Review SEM (DR-SEM) for high-resolution imaging and root cause analysis of identified defects; and Critical Dimension Scanning Electron Microscope (CD-SEM) for accurately measuring critical dimensional parameters such as line width, pitch and aperture in advanced manufacturing processes. Since the de Broglie wavelength of electrons is far shorter than that of visible light, electron beam inspection and metrology equipment boasts irreplaceable ultra-high resolution advantages in scenarios including 3nm and below advanced processes, GAA transistor structures, 3D NAND and advanced packaging, and is widely regarded in the industry as the "last line of defense" to guarantee chip yield.

Main Characteristics of Industry Development

Advanced Processes Drive Structural Upgrading of Inspection Demands

The fundamental growth driver of the electron beam inspection and metrology equipment industry comes from the leap in inspection precision requirements brought by the continuous shrinking of chip manufacturing process nodes. As 5nm, 3nm and even 2nm nodes are gradually advanced, transistor structures evolve from FinFET to GAA (Gate-All-Around) architecture, the number of metal interconnect layers keeps increasing, and the stacking layers of 3D NAND exceed 200. The defect size in the manufacturing process has shrunk to the order of single-digit nanometers. At this scale, traditional optical inspection tools are limited by the diffraction limit of light, leading to significantly reduced sensitivity in some key inspection scenarios. In contrast, electron beam tools, with their sub-nanometer resolution and voltage contrast imaging capabilities, have become essential equipment for yield assurance. According to industry research data released in July 2026, the global electron beam inspection market is expected to achieve a compound annual growth rate of 19.9% from 2022 to 2029, with applications below 1nm accounting for more than half of the market, while applications above 10nm will become the main market for electron beam technology by 2029.

Deep Integration of AI Reshapes Inspection Paradigm

Artificial intelligence is evolving from an auxiliary tool to a core capability module of electron beam inspection and metrology equipment. In traditional inspection workflows, tools had to make a trade-off between high resolution and high throughput — more scanning frames produce clearer images, but the time consumption increases exponentially. The introduction of AI deep learning technology is breaking this bottleneck. According to reports in August 2026, Huiran Microelectronics has adopted AI image enhancement technology to generate image quality close to that of 64-frame images based on single-frame scanning results, which is expected to increase the production efficiency of this process segment by more than 10 times. The more far-reaching impact lies in the fact that AI algorithms can conduct in-depth mining of massive inspection data, accurately identify critical defects that truly affect chip yield, realize the efficient mode of "measuring less while still solving problems", and use machine learning to build prediction models to pre-judge problems in the early stage of manufacturing and adjust processes in advance. This new paradigm of "computational inspection" is fundamentally changing the value creation logic of the industry.

Multi-Beam Technology and High-Speed Inspection Become the Main Line of Technological Evolution

The slow speed of single-electron beam inspection has long been the core bottleneck restricting the large-scale online application of electron beam tools — the inspection time for a single wafer is usually 5 to 10 times that of optical tools. To break this limitation, multi-electron beam technology is accelerating its transition from the laboratory to production lines. The multi-beam architecture emits dozens or even hundreds of electron beams in parallel for simultaneous scanning, which can increase inspection throughput by more than an order of magnitude. According to industry analysis released in August 2026, Massive E-beam Metrology equipment is currently in the commercialization promotion stage, and enterprises such as HMI under ASML continue to invest in this direction. At the same time, equipment technology is developing towards cold field emission electron guns, high acceleration voltage paired with low landing energy control, etc., to balance imaging resolution and photoresist damage control, and meet the comprehensive requirements of advanced processes for "seeing clearer, running faster and causing less damage".

Domestic Substitution Enters an Acceleration Breakthrough Window

Electron beam inspection and metrology equipment is one of the semiconductor equipment categories with the lowest localization rate. According to brokerage research report data released in July 2026, as of the first half of 2026, the localization rate of China's electron beam inspection segment is less than 10%, and the localization rate of high-end electron beam inspection equipment is even less than 2%. However, this situation is changing rapidly. In July 2026, Shanghai Precision Measurement completed the shipment of its 100th electron beam inspection and metrology equipment, with 100% self-developed core components, and its products have been mass-deployed in mainstream fabs such as SMIC, Huahong Group and Hefei Changxin. Dongfang Jingyuan was accepted for IPO on the Sci-Tech Innovation Board in June 2026, planning to raise 2.5 billion yuan. Its CD-SEM equipment has been mass-produced and applied in domestic production lines for more than 5 years. At the policy level, the "Pre-Investigation Solicitation for Opinions on High-Quality Development of Manufacturing Industry in the 15th Five-Year Plan" issued by the Ministry of Industry and Information Technology puts forward the goals that the localization rate of front-end metrology and inspection equipment will exceed 10% by 2027 and 30% by 2030. China Semiconductor Industry Association judges that high-end electron beam equipment will be imported in batches in memory production lines from 2026 to 2027.

Market Size Analysis

Global Market: Steady Expansion with Clear Structural Growth Logic

According to the latest report released by QYResearch in June 2026, the global market size of electron beam inspection and metrology equipment reached 3.308 billion US dollars in 2025, and is expected to grow to 5.461 billion US dollars by 2032, with a compound annual growth rate of about 7.30% from 2026 to 2032. According to a wider-caliber statistic released by QYResearch in August 2026 (covering all categories of electron beam semiconductor equipment such as electron beam mask writing and electron beam lithography), the global market size of electron beam semiconductor equipment reached 7.1 billion US dollars in 2025, and is expected to grow to 19.8 billion US dollars by 2032, with a compound annual growth rate of 14.42%. The two sets of data have different calibers, but both point to the same conclusion: electron beam equipment is entering a new round of growth cycle driven by the triple demands of advanced processes, AI chips and advanced packaging.

From the perspective of product structure, electron beam inspection equipment (EBI and DR-SEM) is still the main body of the market, accounting for about 71.39% of revenue in 2025. Although electron beam metrology equipment (CD-SEM) accounts for a relatively small proportion (about 28.61%), it has a faster growth rate, with an estimated compound annual growth rate of about 7.92% from 2026 to 2032, which is higher than the 7.04% of inspection equipment. This trend indicates that semiconductor manufacturing is evolving from "detecting defects" to "controlling process deviations in advance", and dimension control and data closed-loop management will become the core direction for equipment value improvement.

China Market: Growth Rate Significantly Higher Than Global, Domestic Substitution Releases Incremental Space

China is one of the regional markets with the fastest growth in global electron beam inspection and metrology equipment. According to industry data released in August 2026, the market size of China's electron beam inspection and metrology equipment reached 1.025 billion US dollars in 2025, with a compound annual growth rate of 24.52% from 2021 to 2025, far exceeding the global average. Behind this rapid growth is the dual driving force of large-scale expansion of mainland China fabs and domestic substitution policies. By the end of 2025, there were more than 30 12-inch fabs built and under construction in mainland China. The capital expenditure of each fab in the front-end metrology and inspection segment usually accounts for 8% to 12%, among which electron beam equipment is the standard configuration for advanced process production lines. As domestic equipment gradually passes verification and enters the mass procurement stage, the growth rate of the China market is expected to further accelerate.

Segmented Market: Photomask Inspection Becomes a New High-Growth Track

From the perspective of application fields, wafer manufacturing is still the largest market for electron beam inspection and metrology equipment, accounting for about 95.10% in 2025. However, photomask inspection is becoming the fastest-growing segmented track. According to QYResearch data released in July 2026, the market size of photomask applications was about 160 million US dollars in 2025, and is expected to grow to 370 million US dollars by 2032, with a compound annual growth rate of about 11.87%, significantly higher than the 7.01% of the wafer end. With the popularization of EUV lithography technology and the continuous improvement of requirements for photomask accuracy at advanced nodes, the demand for photomask defect inspection and critical dimension metrology equipment is being released rapidly, becoming a differentiated direction focused on by some professional manufacturers.

Analysis of Major Producers

Global Competition Pattern: Three Giants Monopolize 85% of the Market with Extremely High Concentration

The global electron beam inspection and metrology equipment market presents an extremely concentrated competition pattern. According to the report released by QYResearch in June 2026, the first-tier global manufacturers — Applied Materials, Hitachi High-Tech and ASML (including its subsidiary HMI) — collectively occupied about 85% of the market share in 2024, in an absolute monopoly position. The second-tier manufacturers include KLA, Advantest, Holon, etc., with a combined share of about 13.4%. According to another QYResearch data released in July 2026, the top five enterprises in the global revenue of electron beam inspection and metrology equipment in 2025 are Applied Materials, Hitachi High-Tech, ASML, KLA and Advantest, with a combined market share of about 94.26%.

Applied Materials takes a leading position in the field of Electron Beam Inspection (EBI). According to industry data released in August 2026, its market share was about 50% in 2021. Hitachi High-Tech has profound accumulation in the fields of CD-SEM and DR-SEM, and its CG6300 series CD-SEM achieves a resolution of 1.35nm, which is an industry benchmark product. ASML has established unique advantages in the fields of electron beam mask inspection and high-speed multi-beam inspection through its subsidiary HMI. Although KLA is good at optical inspection, it also holds an important market share in the field of electron beam defect review.

Local Chinese Enterprises: Echelon Initially Formed, Commercialization Accelerates

Local Chinese electron beam inspection and metrology equipment enterprises have risen rapidly in recent years, initially forming three echelons.

The first echelon is represented by Shanghai Precision Measurement and Dongfang Jingyuan, which have achieved large-scale commercial delivery. As of July 2026, Shanghai Precision Measurement has cumulatively shipped 100 electron beam inspection and metrology equipment, with 100% self-developed core components. Its products cover all categories including EBI, DR-SEM and CD-SEM, and the cumulative signed orders from May to July 2026 reached 874 million yuan, having entered the supply chains of mainstream fabs such as SMIC, Huahong Group and Hefei Changxin. Dongfang Jingyuan was accepted for IPO on the Sci-Tech Innovation Board in June 2026, planning to raise 2.5 billion yuan. It holds 443 patents, and its SEpA series CD-SEM achieves a resolution of 1.4nm and a throughput of 60 WPH, with core parameters close to the international mainstream level. In 2026, it signed a nearly 200 million yuan long-term strategic contract with a leading domestic memory fab.

The second echelon is represented by Zhongke Feice. As a leading A-share semiconductor front-end metrology and inspection equipment enterprise, it added the electron beam CD-SEM product line in 2025, released its first equipment and broke the overseas monopoly. Currently, it is conducting wafer sample testing at many leading domestic customers. Zhongke Feice is the only enterprise in China that covers the three technical routes of "optics + electron beam + X-ray", with a total revenue of 2.053 billion yuan in 2025.

The third echelon includes new entrants such as Huiran Microelectronics, Suzhou Xishi Technology, Qingtian Hengrun Intelligent Technology, Wuxi Genxin Yue and Yuanxiang Micro. Most of them are still in the prototype verification or small-batch delivery stage. Among them, Huiran Microelectronics has in-depth layout in the CD-SEM field. Its "Fu" series products cover two major product lines for 12-inch and 6/8-inch wafers, and take the lead in exploring the deep integration of AI and electron beam metrology, launching an AI-electron beam metrology technology platform.

Core Bottlenecks and Breakthrough Directions

Although domestic enterprises have made remarkable progress, there are still obvious gaps with international giants in terms of advanced process adaptation capabilities, long-term stability of electron optical systems, low-damage imaging technology, high-throughput inspection capabilities and customer process database accumulation. Some upstream core components (such as high-performance electron guns, high-precision detectors, nanoscale motion stages, etc.) still partially rely on imports, and supply chain security requires continuous attention. In the future, the breakthrough paths for domestic enterprises will mainly focus on three directions: first, achieving "overtaking in a curve" through AI technology and establishing differentiated advantages in inspection algorithms and data processing; second, taking the lead in realizing large-scale substitution in mature processes and characteristic processes (such as power semiconductors and third-generation semiconductors); third, forming deep collaboration with downstream fabs through the whole chain of "design-manufacturing-inspection", and forcing technology iteration with application demands.