ICS91.140.90CCSQ7841河南省地方标准DB41/T2648—2024电梯应急处置热线服务规范2024-03-12发布2024-06-11实施河南省市场监督管理局发布DB41/T2648—2024I目次前言.................................................................................II1范围...............................................................................12规范性引用文件...........................
