The mmanụ ụgbọala mgbapụta 294000-2690 kwesịrị ekwesị maka ibufe mmanụ dị iche iche, dị ka arọ mmanụ, dizel, na lubricating mmanụ. N'ịbụ onye ejiri ọla kọpa kwadoro ya, ọ nwere ike ibufe mmiri mmiri dị n'ime ala dị ala, dị ka mmanụ ụgbọala, benzene, wdg, ma nwee ọtụtụ ihe eji eme ya.