... density with stalk and solid waste as raw material, for example: the corn stalks, wheat straw, cotton stalks, rice straw, rice husk ... , peanut shell, corn cob, branches, leaves, sawdust and other crops in rural areas ... , wheat straw, cotton stalks, rice straw, rice husk, peanut shell, corn cob, branches, leaves, sawdust and other crops in rural areas ...