Home / Standards / GB/T 7590-1987 GB/T 7590-1987 Active Code of Chinese ideograms set forinformation interchange--The 4th supplementary set 信息交换用汉字编码字符集 第四辅助集 Standard Type GBT ICS 35.040 CCS L71 Status 现行 Issue Date 1987-03-27 Implementation 1987-12-01 Responsible Dept 国家标准委 Drafting Unit 国家标准委