智通财经网·2025-08-25 09:14Core Viewpoint - The report from Minsheng Securities highlights "speed" and "power" as the two core contradictions in current AI development, with PCB (Printed Circuit Board) being a crucial component in the AI industry chain, benefiting significantly from the ongoing advancements in PCB technology and processes [1] Group 1: PCB Industry Trends - The PCB industry is experiencing rapid development in advanced packaging and high-density interconnect technologies, transitioning from traditional HDI and substrate technologies to mSAP processes capable of sub-10μm line widths to meet the demands of high-speed signal transmission and large-scale integration [1] - New technologies such as CoWoP (Chip-on-Wafer-on-Panel) are changing the form of packaging substrates by using large-size PCBs to carry multiple chips, thereby reducing costs and enhancing interconnect density [1] Group 2: Upstream Material Demand - Driven by AI demand, leading PCB manufacturers like Shenghong Technology, Huitian Technology, and Pengding Holdings are actively expanding production, creating a resonance between material upgrades and capacity expansion [2] - Key upstream materials for PCBs include copper foil, electronic cloth, and resin, with upgrades in these materials to meet the requirements of high-speed signal transmission and lightweight designs [2] Group 3: Equipment Supply and Domestic Substitution - The core processes of PCB manufacturing, including drilling, electroplating, and etching, are critical for determining interconnect density, signal integrity, and production yield, with increasing demands for precision and reliability in these processes [3] - Domestic equipment manufacturers such as Dazhu CNC, Dingtai High-Tech, and Dongwei Technology are accelerating their layouts in advanced process equipment for high-layer boards, HDI, and mSAP, reflecting the industry's shift towards domestic substitution [3] Group 4: Investment Recommendations - Recommended PCB leading manufacturers include Shenghong Technology (300476.SZ), Pengding Holdings (002938.SZ), Huitian Technology (002463.SZ), Shenzhen South Circuit (002916.SZ), Guanghe Technology (001389.SZ), and Jingwang Electronics (603228.SH) [4] - In the materials sector, companies with core technologies and customer resources such as Honghe Technology (603256.SH), Zhongcai Technology (002080.SZ), Feilihua (300395.SZ), Defu Technology (301511.SZ), Longyang Electronics (301389.SZ), and Meilian New Materials (300586.SZ) are recommended [4] - For equipment, focus on domestic substitution in core segments with companies like Dazhu CNC (301200.SZ), Xinqi Microelectronics (688630.SH), Dingtai High-Tech (301377.SZ), and Dongwei Technology (688700.SH) [4]