Home / Standards / GB/T 17991-2009 GB/T 17991-2009 Active Fine ceramics (advanced ceramics, advanced technical ceramics) - Vocabulary 精细陶瓷术语 Standard Type GBT ICS 81.060.30 CCS Q32 Status 现行 Issue Date 2009-05-13 Implementation 2009-12-01 Responsible Dept 中国建筑材料联合会 Drafting Unit 中国建筑材料联合会