According to the performance of the imported machine in domestic paper industry, it requires that the tool is operated at high speed, and it should possess higher wear resistance performance for high-speed cutting. For extending the duration of the knife-edge sharpness, my company develops and produces the inlaid high speed steel in time, commonly known as “sharp steel”. International Brand: SKH-2, SKH-5. We use a group of materials (such as hard alloy) with outstanding performance replace the imported products. Therefore, it can significantly save the costs for customers. The knife can be inlaid as followed: the bottom knife ring of rewinder, the paper cutting blades, the free swinging knife, the corrugated paper straight knife for cross cutting, the spiral cutter, the tissue cutter etc.