6616 naftna industrija 
petrokemija
2................................RT kemična industrija
2................................RT kemija
........NT1 naftni derivat
................NT2 butan
................NT2 kurilno olje
................NT2 mineralno olje
................NT2 parafin
................NT2 pogonsko gorivo
2................................RT davek na goriva
2................................RT izpušni plini
2................................RT motorno vozilo
........................NT3 bencin
................................NT4 neosvinčen bencin
2................................RT okolju prijazno vozilo
........................NT3 dizelsko gorivo
........................NT3 kerozin
................NT2 propan
................NT2 težko olje