... the fuel which is made through grinding, pressing, increasing density with stalk and solid waste as raw material, for example: the ... stalks, wheat straw, cotton stalks, rice straw, rice husk, peanut shell, corn cob, branches, leaves, sawdust and other crops in rural ... . After forming the straw charcoal, the fuel boast smaller size with greater weight, high burning rate , easy to store and convenient ...