Pyrotechnics do not include explosive caps designed for toy pistols, snake and glow worms composed of pressed pellets of pyrotechnic mixture, smoke devices consisting of a tube or sphere containing a pyrotechnic mixture, trick noisemakers, such as party poppers, string poppers, or snapper pops, wire sparklers, or any other sparkling devices.

NCGS 14-410

It is unlawful to manufacture, purchase, sell, deal in, transport, possess, receive, advertise, use or cause to be discharged pyrotechnics unless they are to be exhibited, used, or discharged at public exhibitions under the supervision of experts.

NCGS 14-413

The Board of County Commissioners of any county may issue permits for use of pyrotechnics in connection with public exhibitions.

The full text of these statutes can be found on the North Carolina General Assembly website.

Norlth Carolina General Assembly

Winston Salem City Code of Ordinances 30-7

It is unlawful to fire a gun or pistol, firecracker or other fireworks from a boat or from the shore of any city lake, and any person who has in his possession any firearm or fireworks of any kind shall be denied admission to any city lake.

Municode web site, with all city ordinances