 All ngwá gafere voltaji idi mmiri nokpuru osimiri bath ule, ọrụ ahụmahụ na okpomọkụ sitere na site -60 C ruo 60 C ule, okpomọkụ ịgba ígwè ule, corrosion eguzogide ule wdg mkpuchi ihe na-mere nke ihu igwe na UV-eguzogide ọgwụ polima. 