... quality 3.Material can be powder, sawdust ,straw, rice husk Wood Sawdust Dryer/Drying Machine Usage: drying Suitable for food. wood ,sawdust ,straw,rice husk sawdust dryer machine ... 5 TypesWith Unique design, and advanced heating mode by firewood ,oil and electricity, second heating circulation system ... on dry7.small dust, short time.8. high thermal efficiency9.it can dealing with large quantity ...