SINOLINK SECURITIES·2025-11-30 11:54Investment Rating - The report maintains a positive outlook on the AI new materials sector, particularly focusing on domestic leaders such as Zhongcai Technology and Tongguan Copper Foil, which are expected to maintain a technological edge and product reserves [1][11]. Core Insights - The demand for AI new materials is increasing, with a notable distinction between the Google chain and NV chain, leading to differences in quantity, suppliers, and generational products. Cost-effectiveness is prioritized, especially in materials like fiberglass cloth and copper foil [1][11]. - The report highlights the potential for domestic substitution in the market, particularly in response to statements from Mitsui Mining and Manufacturing, indicating a shift in production dynamics among Japanese material companies [1][11]. - The report emphasizes the importance of balancing profitability, capacity, and customer relationships in the context of limited domestic supply capabilities, suggesting that domestic players are currently in a follower position rather than a leading one [1][11]. Summary by Sections Weekly Discussion - The focus this week is on the Google chain, Mitsui's statements, and the motivation for Japanese material companies to shift production. The domestic leaders in materials are expected to maintain their technological advantages [1][11]. Cyclical Linkage - Cement prices averaged 350 RMB/t, down 78 RMB/t year-on-year, with an average shipment rate of 45.4%. Glass prices decreased to 1147.84 RMB/ton, a drop of 20.53 RMB/ton, with inventory days at 30.42 days [3][13]. - The report notes a slight increase in the price of fiberglass, with the average price for 2400tex alkali-free yarn at 3535.25 RMB/ton, reflecting a 0.1% increase [3][61]. Market Performance - The construction materials index decreased by 1.18%, with specific declines in glass manufacturing and fiberglass sectors. The report indicates a need for cautious observation of the cement market due to low demand [16][12]. Price Changes in Construction Materials - Cement prices continued to decline by 0.2%, with regional variations noted. The report indicates a high inventory level in the cement market, with a capacity ratio of 68.13% [29][30]. - The floating glass market is stabilizing, with an average price of 1147.84 RMB/ton, although high inventory levels continue to exert downward pressure on prices [3][42].