Home / Standards / JC 523-1993 JC 523-1993 Abolished 纸面石膏板能耗等级定额 Standard Type JC52 ICS N/A CCS N/A Status Abolished Issue Date 1993-12-22 Implementation 1994-07-01 Centralized Committee 国家建筑材料工业局 Issuing Authority 国家建筑材料工业局