Carbon paper is also •••••••• in fuel cell applications.
manufacture The manufacture of carbon paper was formerly the largest consumer of montan wax.
remained It was then possible to use polyester or other plastic film as a substrate, instead of paper, although the name remained carbon paper.
used Good answer!
Carbon paper (originally carbonic paper) was originally paper coated on one side with a layer of a loosely bound dry ink or pigmented coating, bound with wax, used for making one or more copies simultaneously with the creation of an original document when using a typewriter or a ballpoint pen.