Chinese Heavy Duty All Purpose 3-layer Knife by Master Grade
Master Grade 3-layer stainless steel knife is the only knife that was built using TRIPLEX TECHNOLOGY.
Master Grade has laminated a thin layer of a very hard high speed stainless steel HRC 65° (about as thick as a business card) with two layers of soft steel about HRC 5°.
It is designed to reduce resistance as the knife cut through the food. So, you have the advantage of the blade edge staying sharper 10 times longer than any other knives in the market.
Master Grade is one of two manufactures left in the world that still manufacturing 3-layer knives, each took 7 hours craftsmanship finish to produce such a perfect blade edge.