Home / Standards / GB/T 25457-2010 GB/T 25457-2010 Active Piano pin block 钢琴弦轴板 Standard Type GBT ICS 97.200.20 CCS Y58 Status 现行 Issue Date 2010-11-10 Implementation 2011-05-01 Responsible Dept 中国轻工业联合会 Drafting Unit N/A