Cov ntaub ntawv raw khoom ntawm lub tsheb cable feem ntau yog cov khoom siv hluav taws xob (tooj liab, txhuas) thiab cov khoom siv tshuaj lom neeg, cov tooj liab yog cov khoom siv feem ntau siv, uas muaj kev cuam tshuam zoo rau kev tsim kho tsheb cable kev lag luam. Raws li tooj liab yog cov khoom lag luam, nws tus nqi tau cuam tshuam los ntawm macroeconomic thiab thoob ntiaj teb kev lag luam. Yog tias tus nqi yuav khoom ntawm tooj liab tsis tswj tau zoo, nws yuav muaj kev cuam tshuam loj rau cov txiaj ntsig ntawm kev lag luam cable.
Cov khoom siv rwb thaiv tsev ntawm lub tsheb cable ua lub luag haujlwm tseem ceeb hauv hluav taws xob rwb thaiv tsev thiab kev tiv thaiv sab nraud ntawm tus neeg xyuas pib, uas yog qhov yuav tsum tau ua ntawm lub tsheb cable. Kev ua haujlwm ntawm cov ntaub ntawv rwb thaiv tsev yog qhov tseem ceeb tshwj xeeb rau cov tsheb cables tiv thaiv kev co, hloov mus rau qhov chaw ua haujlwm ntawm ntau yam kev mob xws li kev sib txhuam, ozone, roj paug, kub kub, txias thiab hluav taws xob hluav taws xob. Cov ntaub ntawv tseem ceeb yog PVC, XLPE, TPE, silicone roj hmab thiab lwm yam.
