29.4.3. The retroreflective license plate shall consist of retroreflective (hereinafter referred to as “reflective” only) sheeting laminated to a specified aluminum substrate that is then embossed and message roll coated according to the sheeting manufacturer’s recommendations. 29.4.4. The reflective sheeting shall consist of lens elements enclosed within a transparent resin and shall have a precoated pressure sensitive adhesive backing protected by a removable liner. The pre-printed design, in the reflective sheeting, shall be buried below the sheeting surface to insure reliable long-term durability. 29.4.5. The reflective sheeting, when applied to the license plate substrate and blanked to finished size, shall contain at the discretion of the Director of Motor Vehicles: 29.4.5.1. Identifying marks for purposes of on-vehicle traceability, warranty enforcement and anti-counterfeiting in accordance with these specifications. The warranty marks shall be buried below the sheeting surface for durability and shall incorporate the manufacturer’s production run number that designates the source of manufacture, year of manufacture, and specific lot from which the material was supplied. The warranty marks shall not interfere or detract from the graphic design or reduce sheeting brightness and shall be durable for the service life of the license plate. 29.4.5.2. Prospective bidders shall demonstrate their capability to provide these security devices. 29.4.6. Pre-printed reflective sheeting shall conform to the design, colors and sheeting type as approved by the state and reflective sheeting manufacturer. When using white background sheeting, all graphic inks shall be transparent to facilitate the same daytime/nighttime appearances.