组合使用关键词、标准类型、状态与 ICS 分类，快速定位所需国家标准。
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GB/T 12508-1990
Alphanumeric character sets for optical recognition--Part 2:Character set OCR-B--Shapes and dimensions of the printed image
GB/T 12510-1990
Alphabetial area arrangement of keyboard of Uighur character set for information processing interchange
GB/T 12493-1990
The classification and numbering of food additives
GB/T 12453-1990
Information processing systems--Open systems interconnection--Transport service definition
GB/T 12500-1990
Information processing systems--Open systems interconnection--Connection oriented transport protocol specification
GB/T 12461-1990
Chinese oceanographic research vessel codes
GB/T 12462-1990
World ocean/sea area codes
GB/T 12407-1990
Codes for cadres positions classes
GB/T 12405-1990
Coding for kind of increase or decrease number ofworkers in an organization
GB/T 12408-1990
Codes for social moonlights
GB/T 12403-1990
Names and codes for the officials positions
GB 12409-1990
Geographic grid
GB/T 12345-1990
Code of Chinese ideogram set for information interchange--Supplementary set
GB/T 12354-1990
Method of model designation for the electronic computer peripheral equipment
GB/T 12184-1990
Information processing--Magnetic ink character recognition--Print specifications
GB/T 12200.1-1990
Chinese information processing--Vocabulary--Part 01:Fundamental terms
GB/T 12057-1989
General purpose 37-position and 9-position interface for data terminal equipment and data circuit-terminating equipment employing serial binary data interchange
GB/T 12052-1989
Korean character coded character set for information interchange
GB/T 12050-1989
Information processing--Uighur coded graphic character sets for information interchange
GB/T 12118-1989
Data processing--Vocabulary--Part 21:lnterfaces between process computer systems and technical processes