Yuav ua li cas kom paub qhov txawv ntawm cov cables fiber optic zoo thiab phem?
1. Lub plhaub sab nraud: 1. Lub plhaub sab nraud ntawm cov xov hluav taws xob sab hauv tsev feem ntau yog ua los ntawm polyvinyl chloride (PVC), polyethylene, lossis polyurethane uas tsis kub hnyiab (LSZH). Lub plhaub sab nraud yog du, ci ntsa iab, yoog tau, thiab yooj yim rau tev tawm...
saib cov ntsiab lus