Home / Standards / HG/T 21556.4-1995 HG/T 21556.4-1995 玻纤增强聚丙烯鲍尔环填料 玻纤增强聚丙烯鲍尔环填料 Standard Type HGT ICS 71.120 CCS G91 Status N/A Issue Date N/A Implementation N/A Responsible Dept 发布日期：1900-01-01 Drafting Unit N/A