[ fire retardant and extinguishing compositions for aerial application; chemical substances used in cleaning power lines by aerial means; namely, vegetable matter, crushed vegetable matter, crushed walnut shells, crushed corn cobs, sand, silica, stone, limestone and crushed rock ]

aerial insecticide and pesticide spraying services; aerial cleaning services of electrical components

COMPUTER HARDWARE AND SOFTWARE FOR MONITORING AND RECORDING THE PERFORMANCE OF DEHUMIDIFICATION, AIR CONDITIONING AND HEATING DEVICES