HE421S ke bisphenol e tloaelehileng A epoxy acrylate resin.E na le litšobotsi tsa ho benya ho holimo, boima bo phahameng, le lebelo la ho folisa ka potlako, eoke e 'ngoe ea li-resin tsa mantlha tšimong ea UV.E sebelisoa haholo libakeng tse fapaneng tsa ho roala UV joalo ka li-electroplating bottoms, likoahelo tsa polasetiki, li-inks le khatiso.