ZOZEN gas/oil fired boilers can be divided into the following two types of boilers according to different structures-fire tube type and water tube type, both with large furnace design. Various kinds of gas and oil can be fired separately or in mixture for full combustion, significantly reducing running cost. Industrial gas boiler is particularly widely used.

ZOZEN coal steam boiler and hot water boiler are widely applicable for various kinds of coals. Clean coal technology decreases NOx emission, independent air silo and precise air distribution device help to full combustion of coals.

Biomass boiler can be divided into rice husk boiler, biomass pellet boiler, etc. according to the fuel. ZOZEN manufactures biomass fired boiler according to various biomas fuels characteristics and different combustion speed. Furnace arch, wall, hearing surface are reasonably arranged to get best combustion effect.

ZOZEN produces various types of boilers, including thermal oil boilers. Thermal oil heater refers to a boiler heating oil as medium with coil type design. The oil is heating in a sealed loop, reducing heat loss to realize energy saving effect.