composting equipment for sale Drum Dryer For Sawdust, Vibrating Screen, Portable Conveyor Manufacturer, Rotary Drum Screening Machine,Rubber Belt Conveyor. The sources of organic fertilizer materials can be divided into two categories: one is biological organic fertilizer, and the other is commercial organic fertilizer. There are many changes in the composition of bio-organic fertilizers, while commercial organic fertilizers are made based on the specific formula of products and various by-products, and the composition is relatively fixed. The product will supply to all over the world, such as Europe, America, Australia,United Arab Emirates, Seychelles,Algeria, Jersey.The roller extrusion granulator is used for fertilizer granulation, and can produce various concentrations, various organic fertilizers, inorganic fertilizers, biological fertilizers, magnetic fertilizers and compound fertilizers.