Promoting Fermentation and Decomposition by Turning Machine Flat Reel, Sms Wrap , Chemical Indicator Card , Couch Roll ,Sterilization Indicator Tape . Compost sources include plant or animal fertilizers and their excreta, which are mixed to produce compost. The biological residues and animal excrement are mixed by a composter, and after the carbon-nitrogen ratio, moisture and ventilation are adjusted, and after a period of accumulation, the decomposed product after composting by microorganisms is compost. The product will supply to all over the world, such as Europe, America, Australia,Angola, Casablanca,kazan, Victoria.Compost trommel screen