Ama-insulators wokumiswa okuyinhlanganisela: ishede lemvula le-silicon, elenzelwe ngokomthetho we-aerodynamics, lisebenzisa yonke indlela yokubumba, ukuze kuqinisekiswe ukuba semthethweni kwebanga eliphelele le-creepage ngaphansi kwazo zonke izimo zezulu nezimo ezimbi, kanye nokwenza ngcono ukukhishwa kokungcola kwabafaki insulators ; Induku ye-fiber isebenzisa i-ECR ephezulu yokushisa ne-acid-proof material; Ukuxhumeka kokuphela kokugcina kuthola ukuvikelwa kwekhava ye-zinc, ukuqapha okungaphezulu kanye nokucinana okuqhubekayo kwe-coaxial okulawulwa yikhompyutha, kuqedile ngokubukeka okuhle nekhwalithi ephezulu.