Ihe ndị dị mma na-agụnyekarị eriri eke na-enweghị atụ na eriri sịntetịt.Ultra-mma eke eriri bụ tumadi mejupụtara nke anụmanụ eriri, gụnyere ududo silk, silk, akpụkpọ anụ, anụ ntutu isi, osisi emep uta eri, wdg, na ultra-mma sịntetik emep uta eri bụ tumadi mejupụtara polyester, polyami ...
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