JINGKELIAN QHQ film Pencil Scratch Hardness Tester Determination of Paint Film Hardness by Pencil Hardness Grade of Plow Broken Paint Film
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6B-6H1000g
Load 1000g, Applicable standard GB/T 6739-86, JIS K5401, ASTMD2197, Standard pencil 6B-6H, test angle 45 °, scratch speed 1mm/s.
