Core Viewpoint - The article discusses the current boom in the PCB (Printed Circuit Board) industry driven by the demand for AI applications and related hardware, highlighting the role of upstream equipment manufacturers as key beneficiaries in this cycle [1][3]. Group 1: Industry Trends - The emergence of open-source large models like DeepSeek is fueling a comprehensive explosion in AI applications, leading to a sustained increase in demand for AI servers, optical modules, and switches [3]. - This surge in demand is propelling the PCB industry into a new high prosperity cycle, prompting PCB manufacturers to expand production and stock up [3]. - An "arms race" is underway within the industry as companies compete to meet the rising demand for PCB-related products [3]. Group 2: Investment Opportunities - Equipment manufacturers in the upstream PCB supply chain are positioned as the most reliable "shovel sellers" during this industrial gold rush, suggesting a strong investment opportunity in these companies [3].