The cutting blades used in paper manufacture and manufacturing processes of pulp-associated merchandise such as chipper knives for cutting pulpwood into chip from and slitter knives and turning knives for trimming finished products to fixed lengths, are all so important that blade performance directly affects product quality and merchandise value. The trends toward use of hard-to-cut woods developed due to more wide-ranging raw materials, but on the other hand, high speed and continuous machinery operation have been increasingly achieved due to productivity improvements and basic economic constraints of users. Meeting the machinery demands of such high performance, Dong Yang Knife guarantees sharpness and wear-resistance be developing suitable steels to meet raw material and product demands, and by developing proper heat treatments for the purposes of improving operating ratios and of equalizing the cutting surfaces.