... , 4. high- temperature, homogeneous combustion, burn for long time, 5. smokeless, innocuous, odorless, safety and non-pollution.Analyzing Index:Calorific value: over 5600 ... : ignite it by adopting olefin paper or kindling.2. Time for burning to ash: one pound of charcoal pile randomly, over ... Bag, i.e. PP bag. Liquan Energy Technology Co., LTD. Non-pollution Charcoal Briquette 20#