QHQ-A（500g） Pencil Hardness Tester's video
NBCHAOVIDEO3652 plays · · 2016-07-11
JFL QHQ-A pencil Hardness Tester load weight 500g, suitable for soft base film pencil Hardness test, QHQ pencil Hardness Tester with horizontal pad and 13 pencils, is a pencil scratch hardness instrument.
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