Mejupụtara nkwusioru insulators: sịlịkọn roba mmiri ozuzo wụsịrị, e mere dị ka aerodynamics ụkpụrụ, jiri dum-ịkpụzi usoro, iji jide n'aka na ndaba nke ngụkọta creepage anya n'okpuru bụla ihu igwe na ihe ojoo ọnọdụ, nakwa dị ka mma mmetọ orùrù nke insulators ; Mkpanaka eriri ahụ na-eji ECR ihe ọkụ ọkụ na ihe na-enweghị acid; Ọgwụgwụ dabara adaba njikọ ejiri zinc mkpuchi nchedo, nlebara anya nke ọma na mkparịta ụka coaxial mgbe niile na-achịkwa kọmputa, mechara jiri ezigbo mma na ogo dị elu.