Home / Standards / NB/T 10417-2020 NB/T 10417-2020 Active 低环境温度空气源热泵热风机安装验收规范 Standard Type NB ICS N/A CCS N/A Status Active Issue Date 2020-10-23 Implementation 2021-02-01 Centralized Committee 国家能源局 Issuing Authority 国家能源局