yog, peb muaj ntau yam ntsia hlau hauv cov laj kab thaiv hluav taws xob, cov ntsia hlau hauv cov laj kab hluav taws xob nrog cov ntsia hlau, thiab yuav raug ntsia rau hauv cov ntoo los ntawm cov cuab yeej siv, thiab tom qab ntawd muab cov polywire, xaim, polyrope, polytape ntawm cov ntsia hlau hauv laj kab hluav taws xob insulators, nws yog ib qho yooj yim los tsim lub laj kab hluav taws xob.