... workshop and so on.They can burn coal,oil,gas.... 1) Consumption: 50,000 / 100,000 / 200,000kcal 2) Heating supplying ... area: 300 / 600 / 1,200m2 3) Stainless steel alternative machine, contenting high chromium 4 ... time heating wind system, gaining national patent Diesel burning air heater fan(200,000kcal)