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采用全树脂、静电植砂工艺，砂面锋利耐用。
The use of the whole resin, the electrostatic process of sand, sand sharp durable surface.
砂中水力梯度一直增大，极大值产生在桶底接触砂面时。
Hydraulic gradient in sand increases constantly and the maximum is occurred when the bottom of bucket arrives to the sand surface.
重型纸基砂带，具有适中的柔软度，砂面平整、延伸率小，适合做各种砂带、砂卷和异型制品。
Heavy paper backing, with medium softness, flat sanding surface and small extension. Suit for making various kinds of belts and specialty abrasives.
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