Maintenance, inspection and repair services on fired heaters and process equipment during normal operation, namely, creating hot access to the interior through the external shell for inspection, refractory repair, radiant and convection tube cleaning, SCR catalyst vacuuming and process tube stabilization

machinery for metallurgical and foundry industries; machines for repairing industrial furnaces; machines for cleaning industrial furnaces; parts for the aforesaid goods

Maintenance and repair services for furnaces and refractory linings and structures; welding repair services; furnace and oven repair and maintenance services; kiln repair and maintenance services; maintenance and repair services for ladles, machinery, apparatus and instruments used in the metallurgical processing and smelting industry; cleaning services for furnaces, ovens, kilns, ladles, machinery, apparatus and instruments used in the metallurgical, smelting and processing industries