... Machine 1.High Density briquettes 30-90 mm 2.Round,square,hexagonal shape 3.Cheap price, Original producer Energy Saving Biomass Briquette Machine ... stalk, cotton stalk, bean husk, into high density and energy concentrated hollow bio fuel briquettes(half-charcoal stick ... your requirement. Biomass/Charcoal briquette machine shows the features of high capacity, low energy consumption, compact and durable. ...