Home / Standards / GB/T 28924-2012 GB/T 28924-2012 Abolished Guides for calculating energy efficiency index of an iron and steel enterprise 钢铁企业能效指数计算导则 Standard Type GBT ICS N/A CCS H04 Status Abolished Issue Date 2012-10-12 Implementation 2013-05-01 Centralized Committee 中国钢铁工业协会 Issuing Authority 中华人民共和国国家质量监督检验检疫总局、中国国家标准化管理委员会