在毛主席革命路线的指引下,华北地区建筑标准设计协作组给排水专业第一次会议于1972年12年22日至29日在天津召开。这次会议是在天津市建委主持下,由华北地区建筑标准设计协作组给排水专业核心组筹备召开的。参加会议的有华北地区的河北、山西、北京、天津、内蒙五个省、市、自治区的代表119人,还邀请了华东、西北、 Under the guidance of Chairman Mao’s revolutionary route, the first meeting of the Water Supply and Drainage Specialty of the Architectural Standards Design Collaboration Group of North China was held in Tianjin from December 22nd to 29th, 1972. The meeting was presided over by the Tianjin Construction Committee and was prepared by the Core Group of the Drainage Specialty Group of the Construction Standards Design Collaboration Group of North China. Attending the meeting were representatives from Hebei, Shanxi, Beijing, Tianjin and Inner Mongolia, five provinces, municipalities and autonomous regions in North China, and 119 people were also invited.