N.C. Gen. Stat. § 93D-7: Statements of sale.

Every person fitting and selling a hearing aid, be it new or used, in the State of North Carolina, at or before the time of delivery of the hearing aid shall render to the user and/or purchaser a statement of sale to include the following:

(1) Date of delivery

(2) Condition of hearing aid; new, used, reconditioned

(3) Hearing aid identification number

(4) Name of manufacturer

(5) Price of hearing aid

(6) Charge for fitting and service

(7) Name of dealer and/or fitter

(8) Signature of customer. (1969, c. 999; 1973, c. 1345, s. 3; 2011-311, s. 6.)