N.J. Stat. Ann. § 56:8-53.4

4. A children's product deemed unsafe in accordance with P.L.2007, c.124 (C.56:8-53.1 et al.) as a result of a recall or warning issued by a federal agency, may be retrofitted by the manufacturer if the retrofit has been approved by the federal agency issuing the recall or warning or another federal agency with the authority to approve the retrofit. A retrofitted children's product may be placed in the stream of commerce. A commercial user is responsible for maintaining a record of any notice provided by the manufacturer concerning a retrofitted children's product stating that the retrofit has been approved by the federal agency issuing the recall or warning or another federal agency with the authority to approve the retrofit.