Home / Standards / GB/T 33723-2017 GB/T 33723-2017 Active Grade requirements of subjective evaluator for the acoustic quality of musical instrument 乐器声学品质主观评价人员等级规范 Standard Type GBT ICS 97.200.20 CCS Y58 Status 现行 Issue Date 2017-05-12 Implementation 2017-12-01 Responsible Dept 中国轻工业联合会 Drafting Unit N/A