Unusual types of gramophone records vinyl colors became too high, but the different colored labels were continued, at least for popular music (black) and classical (red, as in "Red Seal"). In October 1945, RCA Victor put on the market its first "non-breakable" phonograph records. Made of a ruby-red, translucent vinyl resin plastic, they cost twice as much ($2 per disc) as the 12-inch Victor Red Seal. In the 1960s, a distinction was made in label colors of promotional copies of 45 RPM records as well, with pop music being issued on yellow labels and country on light green. In the 1970s, such gimmicks started to
National Centre for the Evaluation of Photoprotection increasing problems of degradation (yellowing – bleaching - physical properties loss … ). CNEP is today still associated with LPMM but also with many small, medium and world size companies working in various domains of polymer applications. More of 500 failure cases are examined each year by CNEP and expertise on the last twenty years is covering more of 100.000 different polymer formulations. Progressively with the development of sophisticated analytical tools, CNEP was extending its activity to the direct physicochemical analysis of any failure in polymer material, not only derived from ageing (polymer degradation). All researches are made under contract