Home / Standards / GB/T 28439-2012 GB/T 28439-2012 Active General specification for thermal transfer ribbons 热转印色带通用规范 Standard Type GBT ICS 35.220.10 CCS L64 Status 现行 Issue Date 2012-06-29 Implementation 2012-10-01 Responsible Dept 国家标准委 Drafting Unit N/A