Home / Standards / GB/T 30801-2014 GB/T 30801-2014 Active Hygrothermal performance of building materials and products—Determination of water-vapour transmission properties—Box method 建筑材料及制品的湿热性能 透湿性能的测定 箱式法 Standard Type GBT ICS 91.120.10 CCS Q25 Status 现行 Issue Date 2014-05-06 Implementation 2015-02-01 Responsible Dept 中国建筑材料联合会 Drafting Unit N/A