Home / Standards / GB/T 17722-2026 GB/T 17722-2026 Upcoming Microbeam analysis—Method for thickness measurement on goldcoating layer by SEM 微束分析 金覆盖层厚度的扫描电镜测量方法 Standard Type GBT ICS 37.020 CCS N33 Status 即将实施 Issue Date 2026-01-28 Implementation 2026-08-01 Responsible Dept 国家标准委 Drafting Unit N/A