BY-500g Pencil Hardness Tester's video
NBCHAOVIDEO123 plays · · 2018-12-11
PUSHEN BY-500g Pencil Hardness Tester with a load of 500g can be used for coating hardness testing with soft surface substrates. BY Pencil Hardness Tester meets the standard GB/T 6739 ISO 15184.
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