20mm Primp-Town allata na-ezo aka n'ụdị mmechi eji eme ihe na ntọala ụlọ nyocha. Ọ mejupụtara okpu aluminom jikọtara ya na senaka roba.
Ezubere okpu aluminom iji mechie oghere nke akpa, dika ogwu ma obu karama, ma aru nke aluminom ma obu aluminom.
Ọ na-enye mmechi nchebe dị nchebe iji gbochie mkpọsa, mmetọ, ma ọ bụ nkwalite ọdịnaya ahụ.
Mpekere aluminom na-eme ka nchekwa dị mma, ebe casan roba na-enye ihe mgbochi megide mkpọchi, mmetọ, na evapoma.