... 1.environmental friendly 2.safe to use and inflammable 3.low cost, high output 4.usage:fuel,BBQ Material ... on, wood shavings, bamboo crumbs ,sawdust,and rice hulk is the best of all.advantage of machine-made charcoal :high density,low ... and inflammablequality index:charcoal content >85%calorific value >8000 calash content <5%volatilization <15%moisture<4% 2012 best seller machine-made charcoal machine