A na-eji ya mee ihe dị ka onye na-egbu maramara nke dị ala na nke dị ala, a na-eji ya eme ihe na-egbu egbu, a na-eji ya eme ihe, Enamel rụkwaa ya, ezé na-achọsi ike, wdg.
2.Na ubi elektrọnik, a na-eji Camphorquinone na-eme bọọdụ circts, na-ebu agha nke ngwa eserese: ihe ndị na-emepe emepe, elographic na mbipụta ndị ọzọ.
A ga-ejikwa polylene phomenen.