Home / Standards / HJ 1277-2023 HJ 1277-2023 Active 氮肥工业废水治理工程技术规范 Standard Type HJ12 ICS N/A CCS N/A Status Active Issue Date 2023-02-01 Implementation 2023-05-01 Centralized Committee 生态环境部 Issuing Authority 生态环境部