Home / Standards / GB/T 29120-2012 GB/T 29120-2012 Active Procedure for H-point and R-point Determination H点和R点确定程序 Standard Type GBT ICS 43.040.20 CCS T38 Status 现行 Issue Date 2012-12-31 Implementation 2013-07-01 Responsible Dept 工业和信息化部 Drafting Unit N/A