Low nitrogen oil fired and gas-fired boilers include oil fired hot water boilers, oil fired heating boilers, oil fired bath boilers, oil fired steam boilers, etc. Oil fired boilers refer to boilers using light oil (such as diesel oil, kerosene), heavy oil, residual oil or crude oil as fuel. Compared with gas-fired boiler and electric heating boiler, oil fired boiler operates more economically and is easier to use than gas-fired boiler. With the development of economy, the progress of society and the improvement of people's awareness of environmental protection, coal-fired boilers are gradually out of sight due to serious pollution, and are replaced by new environmental protection digital boilers, such as electric heating boilers, oil fired boilers, gas fired boilers, etc. Electric heating boilers are expensive in operation, and gas fired boilers need to be equipped with gas pipelines. If there is no natural gas pipeline, In addition, we hope that the operating cost of the boiler is low, so we can only choose the oil fired boiler.