GB/T 31308.4-2023 Long-lasting signatures of data elements, processes and documents in administration, commerce and industry Part 4: Attestation object attributes for long-lasting signature formats (English Version)
General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
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GB/T 31308.4-2023
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2023GB/T 31308.4-2023 Long-lasting signatures of data elements, processes and documents in administration, commerce and industry Part 4: Attestation object attributes for long-lasting signature formats