Home / Standards / GB/T 23334-2009 GB/T 23334-2009 Abolished Open-type roof escape hatch on bus 开启式客车安全顶窗 Standard Type GBT ICS 43.080.20 CCS T42 Status 废止 Issue Date 2009-03-23 Implementation 2010-01-01 Responsible Dept 工业和信息化部 Drafting Unit N/A