Home / Standards / GB 7059.1-1986 GB 7059.1-1986 Abolished Safety standard for wood portable vertical ladder 移动式木直梯安全标准 Standard Type GB ICS 13.100 CCS C73 Status 废止 Issue Date 1986-12-09 Implementation 1987-10-01 Responsible Dept 应急管理部 Drafting Unit N/A