7. The screening machine needs to screen out the unqualified particles of fertilizer, and the unqualified materials will also be returned to the production line for qualified treatment and reprocessing. Central Sterile Supply Department Cssd, Disposables Surgical Gown , Long Sleeve Light Weight Coveralls , Sterile Processing Department ,Medical Devices . The cow dung composter adopts a trough-type composting machine. There is a ventilation pipe at the bottom of the trough. The rails are fastened on both sides of the trough. Thereby, the moisture in the microbial biomass is properly conditioned, so that the material can reach the goal of aerobic fermentation. The product will supply to all over the world, such as Europe, America, Australia,Plymouth, Sao Paulo,Costa rica, Lithuania.Fertilizer blenders