no. 259
according to the requirements of the "notice on printing and distributing the first batch of engineering construction associations in 2015" issued by china association of construction industry standardization (jian biao xie zi [2015] no. 044), the central government design and research institute of china municipal engineering co., ltd. and shenzhen qingquan water co., ltd. and other units of the "upstream flow filtration design rules", the association of urban water supply and drainage committee organized the review, is now approved for release, number cecs 451: 2016, from 2017 january 1 will come into effect.
september 27, 2016
