Group 1: AI and Storage Demand - The demand for high bandwidth and high-density memory is increasing due to the preprocessing of massive data and loading of large model parameters in the AI era. An AI server requires 8 times more DRAM and 3 times more NAND compared to a regular server, leading to a surge in demand for high-performance storage products like HBM and DDR5 [1] Group 2: 3D NAND Technology - The 3D NAND technology is a key trend in the semiconductor industry, significantly enhancing storage performance and capacity by vertically stacking memory cells. This method allows for increased density without relying solely on smaller process nodes, which face reliability issues below 15nm [2] Group 3: Non-Destructive Testing Methods - Non-destructive testing methods such as ultrasound and X-ray are crucial for ensuring the quality of advanced packaging in semiconductor manufacturing. These methods help in detecting internal structures and interface integrity, which are vital for maintaining yield stability in 3D stacking processes [2] Group 4: Recommended Companies - Companies like Jiao Cheng Ultrasound and Ri Lian Technology are highlighted for their innovative solutions in the semiconductor field. Jiao Cheng Ultrasound has developed a wafer-level ultrasonic scanning microscope for defect detection in semiconductor packaging, while Ri Lian Technology's open-ray source technology aids in identifying deep internal defects in chips [3]

Core Viewpoint - The article discusses the ongoing global AI wave and the resulting shortage of storage chips, which is driving an expansion in production capacity, particularly in high-end storage products like HBM (High Bandwidth Memory) [3][4]. Group 1: Storage Shortage and Expansion Expectations - The current upcycle in storage chips is primarily driven by the explosive demand from AI servers and multimodal applications, leading to shortages and price increases [5]. - In October, prices for various storage models surged, with increases ranging from 40% to 100%. Major manufacturers like SanDisk announced a 50% price hike for NAND flash memory due to heightened demand and tight wafer supply [6]. - The shift of international manufacturers away from low-end markets to focus on high-end products has exacerbated supply shortages, particularly affecting consumer electronics like smartphones and PCs [6][7]. Group 2: Performance of Domestic Semiconductor Equipment - The semiconductor equipment sector has shown strong performance, with the total revenue for the sector reaching 85.21 billion yuan in the first three quarters of 2025, a year-on-year increase of 31.54% [8]. - Companies like拓荆科技 reported a revenue of 4.22 billion yuan, up 85.27%, and a net profit increase of 105.14% [8][9]. - Inventory and contract liabilities are at historical highs, indicating strong order visibility and future revenue potential for equipment manufacturers [9]. Group 3: Domestic Equipment Manufacturers' Growth - Domestic storage leaders like Yangtze Memory Technologies and Changxin Memory are expected to enhance their production capacity post-IPO, further boosting the demand for domestic equipment [7]. - The semiconductor equipment market is benefiting from the expansion of storage production, with key equipment types like etching and deposition devices seeing increased demand [9][10]. - Companies such as北方华创 and中微公司 are achieving significant milestones in equipment delivery and product development, positioning themselves well in the high-end semiconductor equipment market [10].