According to the requirements of the “Notice on Issuing the First Batch of Zhejiang Province Building Energy Efficiency and Green Building and Related Engineering Construction Standard Revision Plan for 2022” (Zhe Jian She Fa [2022] No.

5) issued by the Department of Housing and Urban Rural Development of Zhejiang Province, the standard preparation team has formulated this standard through extensive research and reference to relevant domestic and foreign standards.

Released on February 19, 2025 and implemented on July 1, 2025.

spherical head rubber former

.