HE421F he epoxy acrylate oligomer. Loaʻa iā ia ka wikiwiki o ka mālama ʻana, ke kūpaʻa melemele maikaʻi, a me ke kumukūʻai kūpono i ka uhi ʻana o UV / EB, nā noi inika. Hiki ke hoʻohana ʻia ka HE421F ma nā ʻano substrate like ʻole, me nā plastics, metala, a me ka lāʻau.