Gasfier for wood pellet and coalsepcifical for coal,pellet,wood,straw,etc. smokeless,no tar,1.5kg firewood can last ... 1-2hour The Gasfier is sepcifical for coal,pellet,wood,straw,etc.Main Features and its Performance:The Gasifier uses ... the thermal efficiency by more than 10%.4. Easy-open feeder decreases the work strength. If you want to do more ...