Struktur kabel serat optik akses benang aramid. Tabung longgar dilapisi dengan lapisan elemen penguat aramid, dan kemudian lapisan sabuk baja berlapis plastik dua sisi (PSP) dibungkus secara longitudinal, dan lapisan bahan halogen nol asap rendah (LSZH, asap rendah, bebas halogen, tahan api) diekstrusi di luar.
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