... can be: rice husk, branch, bark, sawdust, cornstalk, straw, peanut husk, paper pulp, animal waste, palm, cotton ... stalk, wheat straw etc. Everything which can be burning.6. Specification ... pellet is 4#,6#,8#,10#,15# with cylindrical shape, the length of the pellet is adjustable ... *W1m*H1.5m Pictures for reference straw pellet press machine with the capacity of 4t per day