YZ rɔba-a wɔde nhama ayɛ, sɛ́ waya ne nhama a wɔtaa de yɛ ade no, wɔ mfaso horow a edidi so yi .
(1) Nsakraeɛ: Wɔde rɔba nneɛma na ɛyɛ YZ rɔba-nhama a wɔde ayɛ no akyi, a ɛma ɛyɛ mmerɛw sɛ wɔbɛtumi ayɛ nsakraeɛ, na ɛma nhama no mu nkotoku ne ne ho a wɔde bɛkɔ no yɛ mmerɛw na ɛdi ahwehwɛdeɛ no ho dwuma .
Mmere a ɛtaa ba benkum ne kankyee.
(2) Ɔhyɛ a ɛko tia: Rɔba a wɔde akata so no betumi ako atia ɔporɔw yiye na ama nhama no nkwa nna ayɛ kɛse, titiriw wɔ mmeae a ɛho hia sɛ wɔtaa keka wɔn ho na wɔyɛ basaa no.
(3) Nneɛma a ɛko tia nsɛe: rɔba nneɛma wɔ corrosion resistance a ɛkyɛn so na ebetumi ako atia acid, alkali, nkyene ne nnuru afoforo a ɛreworo so no, na ɛma ɛfata ma nnuru a ano yɛ den a ɛwɔ hɔ no.
