Home / Standards / HG 20536-1993 HG 20536-1993 聚四氟乙烯衬里设备 聚四氟乙烯衬里设备 Standard Type HG ICS 71.120 CCS G94 Status N/A Issue Date 1994-05-07 Implementation N/A Responsible Dept 化学工业部 Drafting Unit N/A