... 2. Energy saving 3. Overload protection device 4. Long service life CE Approved bioenergy ring die wood pellet ... , clover, cotton seed shell etc... and can mix with all kinds of powder materials.c. Raw material water ... , use convenient, reliable performance etc.e. Our factory with diameter of 1.5, 2, 3, 3.5 and ... needs.Spare parts pictures for reference: 2012 New arrival ring die wood pellet mill