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หัวเจียรยาง For Dummies

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· Has A greater volume of toughness than WA (white alundum), and Using the WA amount of hardness, it's great condition retention, so it's got a long dressing cycle, and generates very little warmth in the course of grinding. As compared to WA, it can be employed in fields with https://beediadiamond.com/catalog/rubber-points
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