... corn stalk, rice husk , palm fiber ,palm shell or groundnut shell , very hard wood e.c.t, also can ... pelletizing room , ring die and roller assemble works in a horizontal way, but common ring die pellet machine ... box side and roller assemble ,ring ide work in a vertical level, their feeding speed and working ... die bottom layer , the ring die keeps stable ,in this way ,ring die top layer will rebound ...