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About หัวเจียรเหล็ก

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· Has A higher degree of toughness than WA (white alundum), and Along with the WA level of hardness, it has outstanding form retention, so it's a protracted dressing cycle, and generates little warmth for the duration of grinding. When compared to WA, it can be used in fields with https://beediadiamond.com/catalog/rubber-points
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