Home / Standards / GB/T 28121-2011 GB/T 28121-2011 Abolished Tea bag paper of non heat seal type 非热封型茶叶滤纸 Standard Type GBT ICS 85.060 CCS Y32 Status 废止 Issue Date 2011-12-30 Implementation 2012-08-01 Responsible Dept 中国轻工业联合会 Drafting Unit 中国轻工业联合会