Trial charcoal made from bark ball, Niang. I found that the charcoal from shells to provide efficient child Niang heat somewhat better than ordinary wood charcoal.
Experiments made from shell charcoal briquette Niang found shell Niang efficient heating rather than conventional charcoal. There is no erupt when it gets hot and can heat longer than ordinary charcoal.
From the experiment making charcoal from shell djenkol beans found that charcoal from shell djenkol beans are effective in providing heat rather than ordinary charcoal