Charcoal is mainly used in rural areas abandoned wood, sawdust, rice husk , corn cobs, peanut shells, and a variety of crop stalks , after screening , drying, molding, carbonization and cooling from. Compared with ordinary charcoal, charcoal , burning with uniform resistance, burning, smoke-free , crude oil production, tasteless , no residue , high strength , good thermal conductivity , low ash content and so on. Calorific value per kilogram of charcoal up to 8,000 calories more than four times that of ordinary charcoal burning time . In addition to daily charcoal for heating , but has also been widely applied to food and beverage machine pellet , metallurgical industry, chemical industry.