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About หัวเจียรเหล็ก

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· Has An increased volume of toughness than WA (white alundum), and With all the WA volume of hardness, it has superb form retention, so it's a protracted dressing cycle, and generates minimal warmth for the duration of grinding. Compared to WA, it can be utilized in fields with far https://beediadiamond.com/catalog/rubber-points
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