Dab tsi cable yog qhov zoo rau cov neeg hais lus?

Tooj liab yog cov khoom siv dav tshaj plaws rau kev hais lus cable vim nws cov nqi qis thiab tsis muaj zog. Txawm li cas los xij, tooj liab ua oxidise yog li nws yuav tsum tau npog zoo thiab insulated.