The 90-500 series is designed for a maximum of 5.8 MW industrial boilers, and a concentrated expression of the low nitrogen oxides (<80mg/kWh) the innovation of technology development. This series is equipped with a mechanical or electronic proportional control system (inverter and oxygen control unit available for optional), efficient and reliable. The proportion of models of all-electronic remote communication system via the data bus. The new adjustable combustion head for optimal air fuel ratio of allocation, the output flame evenly distributed along the furnace axis direction. The burner body is integral cast aluminum, and integrated mechanical / electronic regulatory element. Simulation of electronic control box panel can display the operational status of every process. The 500 series also uses a new type of damper and air intake silencer, its operating noise level is much lower than similar products in the market.