Ventilation and Oxygen Supply - Manure composting is an important factor in the lack of air and oxygen. Loading Unloading Movable Belt Conveyor, Double Roller Granulator Machine, Pellet Making Granulator, Fertilizer Granulator Machine,China Hopper Belt Conveyor. Organic fertilizer production line, pile turner, granulator and other organic fertilizer production equipment. Suitable for chicken manure, pig manure, cow manure organic fertilizer production, reasonable price and quality assurance. The product will supply to all over the world, such as Europe, America, Australia,Qatar, Oman,Canberra, Milan.The pan-type fertilizer mixer blends and stirs all the raw materials in the mixer to achieve the overall mixed state.