... grinding, pressing, increasing density with stalk and solid waste as raw material, for example: the corn stalks, wheat straw, cotton ... leaves, sawdust and other crops in rural areas , solid waste, furfural-residue, edible fungus dregs,and Chinese herbal medicine residue ... leaves, sawdust and other crops in rural areas , solid waste, furfural-residue, edible fungus dregs,and Chinese herbal medicine ...