Kutumiza kwa ulusi wa mlengalenga nthawi zambiri kumakumana ndi zovuta zazikulu, kuyambira nyengo yoyipa mpaka kuperewera kwamapangidwe. Zopinga izi zimafuna yankho lomwe limaphatikiza kukhazikika, kuchita bwino, komanso kusinthasintha. Chingwe cha ADSS, makamaka Single Sheath Self-Supporting Optical Fiber Cable, chimakwera ...
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