The diameter of the new tool for cutting white steel is 69mm, 67.5mm after each 0.5mm grinding for the first to third times, (class a tool) cuts aluminum foil with medium and high pressure (≥ 160) and above VF, 66.5mm after each 0.5mm grinding for the fourth to fifth times, (class B tool) cuts aluminum foil with low pressure, 65.5mm after 0.5mm grinding for the sixth to seventh times, (Class C tool), cuts negative foil, 65m after 0.5mm grinding for the eighth time, (Class D tool) cuts Cut the electrolytic paper, and discard the cutter after the specified meter is used.<br>
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