... cost 3.long lifetime 4.ISO9001 Raw materials for making organic fertilizer1. Agricultural waste: straw, dregs of beans, cotton ... : food waste, bones, the roots and leaves of vegetables, etc..5. Sludge: the sludge of the river, the sewer, etc.. Advantage of the organic fertilizer ... -to-flow or hard-to-flow materials. Picture of organic fertilizer production making equipment If there is any questions, ...