Dab tsi yog telecom manhole npog

Telecom manhole npog, tseem hu ua telecommunications manhole npog, yog siv los npog qhov nkag thiab tawm ntawm kev sib txuas lus hauv av (xws li cables, kav dej, hlws ris thawv, thiab lwm yam).
Lub luag haujlwm tseem ceeb ntawm kev sib txuas lus manhole npog yog los tiv thaiv kev ruaj ntseg ntawm cov khoom siv hauv kev sib txuas lus, tiv thaiv cov neeg ua haujlwm tsis raug cai nkag mus, thiab xyuas kom muaj kev sib txuas lus zoo.
Telecom manhole npog feem ntau yog ua los ntawm cov ntaub ntawv muaj zog (xws li cov hlau ductile, cam khwb cia hlau, cov ntaub ntawv sib xyaw, thiab lwm yam) thiab muaj cov yam ntxwv ntawm kev tiv thaiv tub sab nyiag, tiv thaiv plam, tiv thaiv corrosion, thiab lub zog siab.
Nyob rau tib lub sijhawm, kev sib txuas lus hauv kev sib txuas lus manhole yuav raug cim nrog "Telecom" lossis lub logo ntawm lub tuam txhab kev sib txuas lus uas cuam tshuam los pab txhawb kev txheeb xyuas thiab kev tswj hwm.