QHQ-3084 Pencil Hardness Tester's video
NBCHAOVIDEO1490 plays · · 2016-07-11
QHQ-3084 Pencil Hardness Tester is equipped with 750g/1000g two kinds of weight weight weight QHQ-3084 Pencil Hardness Tester, QHQ-3084 Pencil Hardness Tester is designed and manufactured according to GB/T5739-1996.
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