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the difference between steel wire cutting pills 4 3 0 and 3 0 4 austenite type steel wire cutting pills manufacturer lists two types: one is 3 0 4 and the other is 4 3 0 . 4 3 0 is ferrite, 3 0 4 is iron-free.

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www.dychenglong.cn steel pill manufacturer 2025-01-28