ʻO kēia huahana he huahana ʻelua ʻāpana i haku ʻia me ka pena nui i loaʻa ka resin hydroxy acrylic, nā puaʻa, nā mea kōkua, nā mea hoʻoheheʻe a me ka lāʻau lapaʻau i loaʻa ka aromatic diisocyanate prepolymer, me ke kala ʻālohilohi.