Fiber optic cable stringing block (pulley), yog siv los rub cov aerial fiber optic cable los yog nws cov hlua.Stringing thaiv tuaj yeem nruab nrog txoj hlua xauv, haum nrog ib txhais tes thiab swiveling nuv.
Xav tias dawb nug txog fiber ntau cable stringing thaiv.
kawg...
