This is a 100% hand-made knife. It is made of high-carbon stainless steel Clad Steel blade. Its operation process is very complicated. The time for producing a knife is longer than that of ordinary knife. It needs constant in the production process. In the quenching - Hammer -tempering- clamping steel - Hammer -quenching- tempering and other continuous cycle operations.
The quenching splash is 780 degrees and the tempering is 180 degrees - 200 degrees.
This operation guarantees the hardness and sharpness of this knife .
If uses it correctly. You can use the knife 15--20 years.