The TFQ that my company produce the quickly square card, the TYQ circle card corpus adopt the 35CrMo steel mold, the empress of the thick add type through adjust the quality processing, strengthen it to work strength: The card tile adopts the 20CrMoTi metal alloy steel, processing juniors to go the high frequency processing, strengthening its degree of hardness; The card tooth makes into a thin tooth, hurting to the light pole small, can prolong the light pole service life availably, in the meantime can safely card tight light pole, use a safety, fast and convenient