... 4.usage:fuel,BBQ Material: The source of material is wide,could be coconut shell, peanut shell, stalk shell,corncob,sawdust and so on, ... wood shavings, bamboo crumbs ,sawdust,and rice hulk is the best of all.advantage of ... >8000 calash content <5%volatilization <15%moisture<4% coconut shell of machine-made charcoal making line