2020GB/T 1.2-2020 Directives for standardization—Part 2:Drafting rules of standardizing documents based on ISO/IEC standardizing documents
2010GB/T 20000.2-2009 Guidelines for Standardization Work Part 2: Adoption of International Standards
2001GB/T 20000.2-2001 Guides for standardization--Part 2: Adoption of international standards
GB/T 20000.2-2009 was changed to GB/T 1.2-2020 Directives for standardization—Part 2:Drafting rules of standardizing documents based on ISO/IEC standardizing documents.