... filtering 2 High heat transfer boiler 3 automatic Industrial Wood Pellet biomass steam pellet Boiler Features 1 Energy-saving, environment friendly: The ... haze speed, makes thermal efficiency above 85%. The boiler uses wood pellet as fuel, Zero emission of CO2, The mist and dust ... other indexes reach the national one-class. 2 low-cost: wood-pellet, a kind of renewable resources, 1/4 cost of the ...