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Straw Worm Compost Bin is designed to help smallholder farmers in poor areas get access to low-cost fertilizer. It‘s innovation is that all materials are sourced from local resources. It uses wheat straw as raw material for production, and uses worms and scraps as composting material. The high water resistance and air permeability of wheat straw can make it very conducive to the live of the worm. Straw Worm Compost Bin encourages people to return crop residues and other organic material to the soil, and help them enhances fertilizer use.