1.environmental friendly 2.safe to use and inflammable 3.low cost, high output 4.usage: ... Material: The source of material is wide,could be coconut shell, peanut shell, stalk shell,corncob,sawdust and so on, wood shavings, bamboo crumbs ... %calorific value >8000 calash content <5%volatilization <15%moisture<4% coconut shell of machine-made charcoal making line