The knife is made of tungsten carbide materials, but other materials are available. Such as HSS, 9CrSi, Cr12Mo, VW6Mo5, Cr4V2, hard alloy, etc. The raw materials are heat treated, vacuum treated, and the hardness is higher. Heat treatment in your own factory to ensure product stability. The knife edge is sharp, smooth, sharp and durable, imported precision processing equipment can process a variety of non-standard products to ensure the precision of the products.