pencil hardness hardness
pencil hardness hardness, Total:3 items.
The international standard classification for "pencil hardness hardness" includes: Paints and varnishes .
The Chinese standard classification for "pencil hardness hardness" includes: Basic standard and general method for coating .
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
- GB/T 6739-2006 Paints and varnishes - Determination of film hardness by pencil test
- GB/T 6739-2022 Paints and varnishes—Determination of film hardness by pencil test
- GB/T 6739-1996 Determination of film hardness by pencil test
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