Home / Standards / GB 21257-2014 GB 21257-2014 Abolished The norm of energy consumption per unit product of caustic soda 烧碱单位产品能源消耗限额 Standard Type GB ICS 27.010 CCS F01 Status 废止 Issue Date 2014-04-28 Implementation 2015-01-01 Responsible Dept 国家标准委 Drafting Unit N/A