Scientific and technological services, namely, equipment repair in the field of aviation.

APPARATUS FOR EVALUATING THE PRESENCE OFCARBON NONOXIDE, CARBON DIOXIDE, WATER VAPOR AND OIL MIST IN BREATHING AIR IN COMPRESSED AIR SYSTEMS AND IN COMPRESSEDAIR CYLINDERS OR BOTTLES ALL FOR INDUSTRIAL USE

NEUTRON RADIOGRAPHY, NEUTRON ACTIVATION ANALYSIS, AND NEUTRON IRRADIATION

Aircraft