Anyị bụ nnukwu ụlọ ọrụ na-ekpuchi ihe na-ekpuchi ọkụ na ọkụ na-ejikọta nyocha na mmepe, mmepụta na ahịa.Ngwaahịa ụlọ ọrụ anyị gụnyere: akwa mkpuchi ọkụ, usoro gasket, usoro asbestos, usoro nkwakọ ngwaahịa, ngwaahịa seramiiki, wdg.
Oge nzipu: Eprel-04-2023