P3H4O1T1O1P3O1L1Y4M3E1R1S1
25 points
PHOTOPOLYMERS is validvalid
PHOTOPOLYMER, [n]
PHOTOPOLYMER, a photosensitive plastic used esp. in the manufacture of printing plates [n]
PHOTOPOLYMER, [n]
PHOTOPOLYMER, a photosensitive plastic used esp. in the manufacture of printing plates [n]