Core Viewpoint - The semiconductor industry heavily relies on lithography technology, with a low domestic production rate of lithography machines and photoresists in China, leading to significant dependence on imports, particularly from Japan and the Netherlands [1][3]. Group 1: Dependency on Japanese Supply - Japan's recent statements have clarified that there is no change in trade policy regarding the supply of photoresists to China, alleviating fears of a supply disruption [3]. - Analysts believe that Japan is unlikely to completely halt supplies due to China's current chip manufacturing capabilities, which do not require advanced EUV photoresists that Japan specializes in [5]. - The demand for ArF photoresists in China is limited due to existing manufacturing processes, with a greater need for more mature KrF photoresists, which can be sourced from both South Korea and domestic producers [8]. Group 2: Potential Supply Chain Challenges - Japan may impose barriers such as requiring approvals rather than outright halting supplies, as a complete stop would leave them with no leverage in negotiations [10]. - Despite Japan's denial of supply disruptions, there is a call for China to strengthen its own capabilities to mitigate risks associated with reliance on foreign suppliers [12].

Group 1 - Japan has reportedly stopped exporting photoresists to China since mid-October, affecting major companies like Canon, Nikon, and Mitsubishi Chemical, although no official announcement has been made [1] - Photoresist is a critical material in semiconductor manufacturing, used to create intricate circuit patterns on wafers by reacting to light [1] - The disruption in supply is considered a worst-case scenario for China, as it heavily relies on imports for photoresists [1] Group 2 - Japanese companies currently hold 70% of the global market share in photoresists, with firms like JSR, Shin-Etsu Chemical, and Tokyo Ohka leading the industry [4] - China has a low self-sufficiency rate in photoresists, with an import dependency of 80%-90%, and 50%-55% of imports coming from Japan [4] - In 2024, imports from Japan are expected to reach $1.36 billion, accounting for 54.5% of the total import of photosensitive chemicals [4] - Advanced EUV photoresists are entirely imported, with over 90% dependency for ArF photoresists and over 95% for KrF photoresists used in various semiconductor processes [4] - The domestic electronic chemicals industry in China is accelerating its localization efforts, with some companies achieving full supply chain autonomy for photoresists, potentially entering international semiconductor supply chains [4] - If Japan indeed halts exports, it could significantly impact China and provoke retaliatory measures [4]

Core Insights - A recent report from a well-known international investment institution indicates that China has a technological gap of approximately 20 years in advanced chip manufacturing compared to Western developed countries [1] - The report highlights a significant disparity in photolithography equipment manufacturing between China and the United States, identifying it as a major obstacle to producing high-end chips in China [1] Industry Summary - The most advanced photolithography equipment is developed and manufactured by European companies, which rely on core components from the United States, thus being affected by export controls [1] - Due to external restrictions, Chinese companies face difficulties in obtaining high-end photolithography equipment, directly impacting their research and mass production capabilities in advanced processes [1] - For instance, domestic major chip manufacturers are forced to use relatively outdated technologies to produce 7-nanometer chips, which not only affects production efficiency but also significantly increases manufacturing costs [1] Technology and Supply Chain - The manufacturing of high-end photolithography equipment involves a global supply chain, with key components primarily located in the US and Europe, indicating a substantial gap in China's self-sufficiency in this area [1] - Photolithography is a core technology that transfers chip design patterns onto silicon wafers, and high-end equipment enables finer line delineation, thereby enhancing overall chip performance [1] - After the pattern transfer, multiple processes such as etching, deposition, and cleaning are required to complete chip manufacturing, underscoring the irreplaceable role of photolithography equipment in the chip manufacturing process and its influence on the industry's advancement towards high-end development [1]

Investment Rating - The report does not explicitly state an investment rating for the industry Core Insights - The lithography process is the most technically challenging, costliest, and time-consuming step in chip manufacturing, accounting for approximately 30% of costs and 40-50% of time in the manufacturing process [7][10][12] - The lithography process involves multiple steps, including surface treatment, coating, exposure, development, and inspection, with advanced technology nodes requiring 60-90 lithography steps [7][10] - The lithography market is dominated by three major players: ASML, Nikon, and Canon, with a market size in the hundreds of billions [3.2][4.1] Summary by Sections 1. Lithography Process - Lithography is crucial for defining the minimum line width of chips and directly impacts the performance and process level of semiconductor devices [7][10] - Key parameters in lithography include resolution and overlay accuracy, which are essential for ensuring the precise transfer of patterns onto silicon wafers [14][32] 2. Components of Lithography Machines - Lithography machines consist of several key components, including the light source, illumination system, and projection optics, which are critical for the exposure process [43][45] - The light source provides the energy needed for lithography, with different types such as mercury lamps, excimer lasers, and extreme ultraviolet (EUV) light being used depending on the process requirements [45][48] 3. Lithography Machine Market - The lithography machine market is characterized by a high level of competition among leading manufacturers, with ASML being a dominant player in the EUV segment [3.2][4.1] - The report highlights the evolution of lithography technology, including advancements in light source wavelengths and numerical aperture (NA), which are essential for improving resolution [19][22] 4. Domestic Supply Chain Manufacturers - The report outlines several domestic manufacturers involved in the lithography supply chain, including Shanghai Micro Electronics, Guoke Precision, and Huazhuo Jingke, each specializing in different aspects of lithography technology [4.1][4.2][4.3]