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Die industry - sand paper circle, electric or Fengdonggongju and other senior grinding material.

模具工业 - 沙纸圈 、 电动或风动工具及其他高级研磨材料.

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Product ground by grinding material with abrasive belt of grit 320 # to produce continuous grinding lines.

用粒度适当粒度的砂带拉丝成连续的线条.

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