... , burn for long time, 5. smokeless, innocuous, odorless, safety and non-pollution.Analyzing Index:Calorific value: over 5600 kcal.Moisture: ≤4 ... be still over 350after 60 minutes.4. Smoke and smell: after 20 minutes burning, smoke and other smell will disappear.5. Appearance ... Bag, i.e. PP bag. Liquan Energy Technology Co., LTD. Non-pollution Charcoal Briquette 20#