Asbestos Cement Sheet Cutting Tungsten Carbide Slitter Knife Cutter Blade Carbide 1. Cleaning all carbide slitter knife be cleaned before packing. 2. Round Packing by rubber strip wrap sharp cutting edge to avoid edge broken. 3. Put the plastic bag and styrofoam box to keep carbide slitter knife steady when express deliver 4. Add plastic foam into inner box for the whole carbide slitter knife for sweet protection. 5. Make export standard strong cartonn or plywood case package according to your needs.