... ,greenhouse and workshop and so on.They can burn coal,oil,gas.... 1) Consumption: 50,000 / 100,000 / 200,000kcal 2 ... incubation and insulating design, low heating loss 6) Italian imported burning component 7) Stainless steel firing chamber, heating efficiency reaches 92 ... added second time heating wind system, gaining national patent Diesel burning air heater fan(200,000kcal)