Ihe nchekwa nchekwa aluminom a dị oke mma, ikike buru ibu, yana ikike nchekwa siri ike. N'otu oge ahụ, ọ na-abịa na ụfụfụ EVA iji chebe ngwaahịa gị nke ọma. Ọdịdị nke ihe mkpuchi aluminom nwere atụmatụ nkuku nchebe nke ukwuu, na-eme ka aluminom siri ike bụrụ ihe na-adịgide adịgide. Mkpọchi isi ihe na-agbakwunye nzuzo, na-enye ohere ka echekwara ihe gị nke ọma.
Anyị bụ ụlọ ọrụ mmepụta ihe nke nwere ahụmahụ afọ 15, ọkachamara na mmepụta nke ngwaahịa ahaziri iche dị ka akpa etemeete, ihe ịchọ mma, ikpe aluminom, ikpe ụgbọ elu, wdg.