2024.08.19
The "On-site Test Standard for Noise of Domestic Drainage System in Civil Buildings" co-edited by Yitong Pipe Industry Group and China Guojian Testing Holding Group was officially released
great news! The "On-site Test Standard for Noise of Domestic Drainage System in Civil Buildings" co-edited by Yitong Pipe Industry Group and China Guojian Testing Holding Group Co., Ltd. has been off