上交所修订发布《上海证券交易所证券发行与承销业务指南第1号——首次公开发行股票（2025年4月修订）》，并自发布之日起施行。

Group 1 - The Shanghai Stock Exchange has revised and released the "Guidelines for Securities Issuance and Underwriting Business No. 1 - Initial Public Offerings (Revised in April 2025)" [1] - The new guidelines will take effect immediately upon publication [1]