1.Ọ na-ejikarị eme ihe na mkpuchi ụgbọ ala, agba ígwè efere efere, nwere ike mkpuchi, enameled waya na mkpuchi ngwa ụlọ.
2.Ọ bụkwa ihe dị mkpa etiti nke kemịkalụ dị mma, a na-ejikwa ya na nkwadebe nke resin polyester, nrapado, eriri sịntetik, ihe akpụkpọ anụ, wdg.