naph - nois
- naphtenic crude
- naphtha
- narrow cut
- narrow distillate
- narrow fraction
- National Ambient Air Quality Standard
- National Lubricating Grease Institute
- natural ageing
- natural aging
- natural cooling
- natural gas
- natural gas compressed
- natural gas liquids
- navy grade
- near-zero-sulfur diesel fuel
- NEDC
- needle bearing
- needle valve
