通信ETF（515880）近20日流入超37亿，通信板块发展路径清晰

Group 1 - The core viewpoint of the article highlights that the communication sector is experiencing significant inflows, with over 3.7 billion yuan flowing into the communication ETF (515880) in the past 20 days, indicating a clear development path for the sector [1] - The report from Galaxy Securities emphasizes that external demand for artificial intelligence hardware remains strong, leading to an acceleration in the domestic substitution process and an extension of the industrial chain towards high value-added segments [1] - The application scenarios for communication technology are continuously expanding, resulting in a growing market size and a positive feedback loop between hardware and applications [1] Group 2 - The communication ETF (515880) tracks the communication equipment index (931160), which selects listed companies involved in communication network infrastructure and terminal equipment, focusing on firms with core competitiveness in areas such as 5G, optical communication, and wireless communication [1] - The index aims to comprehensively reflect the overall performance and development trends of the communication equipment industry [1]