We are one professional company which deals with high quality machinery blades including wood cutting blades, paper cutting blades and plastic-breaking blades, etc. made from high alloy steel and H.S.S., and roll cladding technolodgy has been used the first in China. The hardness is HRC62-66. We have our own factory,also can supply products accoring your drawings, and our products have been exported to Australia, Thailand, U.S.A., Germany, etc.