Vehicle equipment items or devices, other than hydraulic brake fluid, and the containers in which hydraulic brake fluid is sold, shall be permanently labeled with the manufacturer's name or trademark and the identifying nomenclature under which the item or device has been approved, unless approval is otherwise indicated in accordance with FMVSS-compliant methodology. The labelling or identification shall be legible when the item or device, except hydraulic brake fluid, is installed, or otherwise in use, in or upon the vehicle, unless legibility is not required by FMVSS or other standard in this rule.
Haw. Code R. § 19-132-4