Industrial combustion systems, namely, industrial burners and blowers in the nature of gas burners, oil burners, regenerative gas and oil burners, burners for operation on forging and reheating furnaces; combustion units in the nature of burner parts for industrial furnaces, industrial burners and for systems of thermal process engineering composed of heat exchangers, ball valves, air or gas proportional controllers, gas filters, gas solenoid valves, butterfly valves, control valves and/or se...