electronic controls for burners for industrial use

burners for industrial use, namely, burners operating on natural gas, LPG or oil, high velocity burners, minijet burners, nozzle mix burners, cold air burners, hot air burners, flat flame burners, recuperative burners, regenerative burners, radiant tube burners, low NOx burners, and other industrial use burners; and parts therefor

refractory materials, namely, refractory blocks, refractory fiber blocks, refractory bricks, refractory linings, refractory mortars, refractory castable mixes, refractory shapes, refractory modules, refractory fiber modules, refractory shapes for use in thermal process plants

installation, maintenance and repair of burners and furnaces for industrial use