YY(Q) L Vertical Fuel Oil Heated Oil Boiler
Fuel：Diesel
YY(Q)L Vertical gas thermal fluid (hot oil) heater
Fuel：Natural gas, gas, biogas
YY(Q)W（horizontal）Fuel oil thermal fluid (hot oil）heater
Fuel：Diesel
YY(Q)W Horizontal gas Thermal fluid (hot oil) heater
Fuel：Natural gas, gas, biogas
YLW Biomass Organic heat carrier boiler
Fuel：Biomass particles
YLW Coal-fired organic heat carrier boiler
Fuel：Bituminous coal, anthracite