科创半导体ETF（588170）跌幅收窄，第二十二届中国国际半导体博览会即将举行

Group 1 - The Shanghai Stock Exchange's Sci-Tech Innovation Board semiconductor materials and equipment index decreased by 1.10%, with mixed performance among constituent stocks [1] - Leading stocks included Huahai Chengke up by 1.63%, SMIC up by 1.23%, and Tuojing Technology up by 1.01%; while Hushi Silicon Industry fell by 4.77%, Youyan Silicon down by 4.72%, and Jinhong Gas down by 4.24% [1] - The Sci-Tech Innovation Semiconductor ETF (588170) declined by 0.95% [1] Group 2 - The 22nd China International Semiconductor Expo (ICChina2025) will be held from November 23 to 25, focusing on the theme "Gathering Forces for Future Development" [1] - AI servers require higher power supply architectures due to high power consumption, necessitating improvements in efficiency and power density across all supply system components [1] - Third-generation semiconductor materials like SiC/GaN are being promoted for AI data center applications due to their ability to operate at higher temperatures and voltages, reducing energy consumption and costs [1] - Dongfang Securities anticipates broader application of SiC/GaN in response to the increasing demand for high-power supply in AI servers and data centers [1] Group 3 - The Sci-Tech Innovation Semiconductor ETF (588170) and its linked funds focus on semiconductor equipment (61%) and materials (23%), representing a significant area for domestic substitution [2] - The semiconductor equipment and materials industry is crucial for domestic replacement, characterized by low domestic substitution rates and high potential ceilings [2] - The semiconductor materials ETF (562590) also emphasizes semiconductor equipment (61%) and materials (21%), focusing on the upstream semiconductor sector [2]