Feature: 1.Flake type blade design, suitable for crushing general plastics like sheets, tube, profiles and packing materials, also runners, etc. 2.Feeding hopper with back and front double layered insulation for effective noise handling; 3.Blades are made of high-strength alloy tool steel, with high hardness, good abrasion resistance, and long service life. 4.Equipped with multiple safety protection devices to ensure safe operation 5.? 30HP default with chamber cooling system, effectively reducing the heat of chamber and shaft to ensure long durability and preventing material melting and fusion; 6.? 75HP equipped with cylinder system on feeding hopper and mesh holder, optional for other small models as well; 7.Optional for auto collecting and auto powder sifting device for better collecting purposes.