GB/T 39542.3-2020

Mechanical pencils for technical drawings—Part 3: Black leads—Bending strengths of HB leads

NORMA vydaná dňa 21.7.2020

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The information about the standard:

Designation standards: GB/T 39542.3-2020
Note: NEPLATNÁ
Publication date standards: 21.7.2020
Country: Chinese technical standard
Kategória: Technické normy GB