Home / Standards / GB 7744-1998 GB 7744-1998 Abolished Hydrofluoric acid for industrial use 工业氢氟酸 Standard Type GB ICS 71.060.30 CCS G11 Status 废止 Issue Date 1998-10-19 Implementation 1999-04-01 Responsible Dept 中国石油和化学工业联合会 Drafting Unit N/A