Nkọwa dị mkpirikpi:

Ihe mkpuchi anyị bụ nke aluminom anwụ anwụ. The electrostatically etinyere epoxy na polyester resins, nke a na-eghe na, na-etolite a inogide, ìhè isi awọ mputa. Akụkụ ndị na-ebu ugbu a bụ ọla kọpa alloy. Emebere njikọ nke ala iji hụ na njikọ eletrik dị mma site na ijikọ onye na-eduzi ya nke ọma n'elu elu serated.