(1) Product or system for which structure, material, component part, system,
etc. unproven in past years are used in whole or part of the relevant product
or system in (HIAMS) Gr.
(2) Product or system which is different in dimensions or functions even though
the relevant product or system does not fall under the category of above item
(1).
(3) Product or system, which is or was mass produced, and which will be used
under conditions (combination with engine and car model, destination, use
environment, etc.) without use experience in (HIAMS) Gr.