I read this as: Carry-On Trailer Dealers, that are also Trailer Dealers in NC.
The same question as a structured link: https://locationlists.com/find?dataset=carry-on-trailer&relate=same_place&also=b&b.category=trailer-dealers&b.state=NC

LocationLists: Carry-On Trailer Dealers that are also Trailer Dealers, state = NC

Base (a): Carry-On Trailer Dealers. 4,929 places.
Set b: Trailer Dealers, state = NC. 318 places.

Same place: the same street address and ZIP, or within 60 m with a shared name word.

Every region of the overlap (base rows):
- base only: 4,919
- in b: 10

10 base places match the question.
Price for 10 rows: $0.50 by card (data $0.13 + card fee $0.37). One CSV: the base row's own fields plus also_in / not_in and the matching place for each set.

Technical details (developers and AI agents): JSON: https://locationlists.com/find?dataset=carry-on-trailer&relate=same_place&also=b&b.category=trailer-dealers&b.state=NC&format=json