Dị ka azịza nke ebi-amụba ina agba ebi akwụkwọ, akwụkwọ na-emepụta mepụtara ọhụrụ na klas nke akwụkwọ nwere ike tụnyere àgwà nke commercially eji ebi akwụkwọ akwụkwọ (dechapụ ma ọ bụ rotogravure ebi akwụkwọ akwụkwọ).
