1. Cov qauv ruaj khov, muaj kev ntseeg siab.2. Muaj peev xwm tau txais qhov thib ob optical fiber ntau tshaj-ntev.
OPGW optical cables feem ntau yog siv rau ntawm 110KV, 220KV, 550KV voltage theem kab, thiab feem ntau yog siv rau hauv cov kab tshiab tsim los ntawm cov khoom xws li kab hluav taws xob tawm thiab kev nyab xeeb.