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Database: 189760 (25 Oct 2025)
JC/T 421-1991
Chinese Standard: 'JC/T 421-1991'
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Standard Title (Description)
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Related Standard
JC/T 421-1991
English
359
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Days<=3
(Cement abrasion test method)
JC/T 421-1991
Obsolete
JC/T 421-1991
SIMILAR
unprotected-true-PDFs:
GB/T 1346-2024
GB/T 750-2024
JC/T 1088-2008
JC/T 1083-2008
JC/T 740-2006