GB/T 39542.1-2020

Mechanical pencils for technical drawings—Part 1: Classification, dimensions, performance requirements and testing

NORMA vydána dne 21.7.2020

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The information about the standard:

Designation standards: GB/T 39542.1-2020
Publication date standards: 21.7.2020
Country: Chinese technical standard
Kategorie: Technické normy GB