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หินเจียรยาง - An Overview

daveyk936xen9
· Has A greater amount of toughness than WA (white alundum), and While using the WA degree of hardness, it has exceptional form retention, so it's got a long dressing cycle, and generates small heat all through grinding. In comparison with WA, it may be used in fields with more https://beediadiamond.com/catalog/rubber-points
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