... beans, straw, cotton straw, dregs, furfural residue, lees, branches, leaves, wood chips, sawdust, hay, waste mushroom kits, and all the fuel ... sunflower husk, peanut shell and other fruit shell; branch, trunk, bark and other wood waste; a variety of crop straws; rubber; cement ... part adopts “ double-layer die” as the unique structure; wood pellet pressing machine the rollers are made by abrasion-proof ...