... ignite, no mars, 4. high- temperature, homogeneous combustion, burn for long time, 5. smokeless, innocuous, odorless, safety and non-pollution.Analyzing Index:Calorific ... % surface will be burned to ash within 20 minutes, and no flame.3. Duration: the temperature will be over 550after 30 ... Bag, i.e. PP bag. Liquan Energy Technology Co., LTD. Non-pollution Charcoal Briquette 20#