Home / Standards / CJ/T 522-2018 CJ/T 522-2018 Active 污水处理用沉砂池行车式吸砂机 Standard Type CJ ICS N/A CCS N/A Status Active Issue Date 2018-03-20 Implementation 2018-11-01 Centralized Committee 住房和城乡建设部 Issuing Authority 住房和城乡建设部