Sub-section of the circular blade used to cut paper, film, gold, silver foil, aluminum foil, copper foil, tape and other items, the blade cut off the path of least resistance, the most wear-resistant. For commodity accuracy requirements of cutting tools are sometimes required to achieve micron-level precision, choice of materials: Cr12mov, w6mo5cr4v2 w18cr4v, SKH, the M2, Germany 1.3343 Germany 1.2888. 
 Yongfeng products, your right choice. 
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