The structure of aramid yarn access building fiber optic cable is to put Φ250μm optical fiber into a loose tube made of high modulus material, and the loose tube is filled with waterproof compound. The loose tube is coated with a layer of aramid reinforcement element, and then a layer of double-sided plastic coated steel belt (PSP) is longitudinally wrapped, and a layer of low smoke zero halogen material (LSZH, low smoke, halogen free, flame retardant) is extruded on the outside.
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