Home / Standards / LD 55-1994 LD 55-1994 Active 溶解乙炔气瓶填料用石棉技术条件 Standard Type LD55 ICS N/A CCS N/A Status Active Issue Date 1994-05-17 Implementation 1995-01-01 Centralized Committee 劳动部 Issuing Authority 劳动部