Home / Standards / GB 31040-2014 GB 31040-2014 Active Limit of residual formaldehyde from the concrete admixtures 混凝土外加剂中残留甲醛的限量 Standard Type GB ICS 91.100.30 CCS Q12 Status 现行 Issue Date 2014-12-05 Implementation 2015-12-01 Responsible Dept 工业和信息化部 Drafting Unit N/A