A na-eji ụdọ ebufe osisi eme ihe n'ọtụtụ ebe maka ụlọ ọrụ osisi. Ihe nkọwapụta gụnyere 81X, 81XH, 81XHH, na 3939 eriri ebufe osisi. Carbon ígwè ihe bụ aviable.