Investment Rating - The industry is rated as "Buy" with an expected increase of over 15% in the next 3-6 months [57]. Core Insights - The report emphasizes that upstream materials are a key inflationary component in the PCB upgrade iteration process, with three main conclusions: the number of PCBs is increasing, the value of PCBs per cabinet/GPU is rising, and upstream materials are undergoing continuous upgrades [2][8]. - The market is focusing on materials that are close to "ultimate" technology or "upgrade" directions, indicating a potential profit release in 2026 [3][18]. - The report highlights the significant price inflation in electronic fabrics, particularly Low-CTE and Q fabrics, driven by supply constraints and increasing demand from AI applications [4][15][26]. Summary by Sections Upstream Materials - The report identifies that the PCB upgrade process is characterized by increasing PCB quantities and value, with a focus on the evolving requirements for materials such as electronic fabrics, copper foil, and resins [2][8]. - It notes that the industry trends for upstream materials lag behind PCB developments by 0.5-1 year, suggesting a delayed but strong profit release potential in 2026 [3][21]. - The sensitivity of material prices to market trends is highlighted, indicating that cost structures and supply dynamics are favorable for upstream materials [3][22]. Electronic Fabrics - The report predicts a continued price increase for Low-CTE fabrics due to supply shortages and rising demand, particularly from high-end applications [4][38]. - Q fabrics are expected to see significant adoption starting in 2027, with a strong short-term outlook due to supply constraints [26][34]. - The second-generation Low-Dk fabrics are anticipated to face a clear supply-demand gap in 2026, driven by the large-scale rollout of Google's TPU V7 and above [36][37]. Copper Foil - The report discusses the clear upgrade path for HVLP copper foil, with major producers expanding capacity and confirming strong demand trends [5][41]. - The market for carrier copper foil is identified as a second growth area, with a current global market size of approximately 5 billion, primarily dominated by Japanese firms [49]. - Price increases for HVLP copper foil are expected, supported by strong demand from AI and high-performance computing applications [46][45]. Resins - The report highlights the importance of resin types in high-frequency and high-speed applications, with carbon-hydrogen resins being the mainstream choice for advanced PCBs [51][54]. - Domestic companies are accelerating production to meet the growing demand for high-performance resins, indicating a shift towards local supply chains [54].