|Material||SKD11, HSS, TCT|
|Common size||see table below|
We use ultra fine grain tungsten carbide, knife have good bending resistance, strong toughness and not easy to be broken, using life is about 8million meters length.
The factors influencing useful life of the knife:
（1）Machine precision and correct installation and maintenance, otherwise easy to be broken ;
（2）The thickness of the cardboard and its clarity;
（3）Reasonable automatic sharpening time
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