Perforation blades manufactured from the high quality steels through carefully heat treatment.
The perforation blades are even produced with precision ground, precision engineered for dimensional stability and precision tolerance.
The upper perforation blades and under peforation blades will be cooperated in a suite.
Virious types materials would be chosen, such as SK5, HSS, D2 etc.
SHANGCHENG CTOOLMAKE CO., LTD
TaiBai North Road No.1, BeiLin Distict, XiAn City, Shannxi, China