Anyị ọkachamara na teknụzụ ọka osisi metal, na-eji teknụzụ mbufe ọkụ mee ka ọ dị mma na oche siri ike. A na-emegharị ngwaahịa ndị a na gburugburu ebe obibi dị ugbu a nke ụlọ oriri na ọ hotelụ nke kpakpando na ụlọ nri a ma ama, nke nwere ike nweta ọkụ nke akwa osisi na-enweghị ịkpụ osisi.
Iji mee ka ngwaahịa anyị na-eme mgbanwe n'ebe ndị azụmahịa dị elu, anyị ejirila nnukwu ego na mmepe ngwaahịa.
1. Patenteted PCM igwe, igwe osisi kpuchiri ekpuchi niile oche anyị.
2. Na-azụlite byal pụrụ iche iji mee ka ngwaahịa anyị dịkwuo nso na mmetụta nke osisi mkpuchi.