自承式接入网用蝶形引入室内光缆是将光通信单元处于中心，两侧放置两根平行加强元件（GFRP/KFRP/钢丝），在侧再附加一根钢丝加强元件，**，挤制黑色或彩色低烟无卤护套成缆。
耐弯光纤，提供更大的带宽，增强网络传输特性
Bend resistant fiber provides greater bandwidth and enhances network transmission characteristics
两根平行加强件使光缆具有良好的抗压性能，保护光纤
Two parallel stiffeners make the optical cable have good compressive performance and protect the optical fiber
单根钢丝附加加强元件，使光缆具有良好的抗拉性能
A single steel wire is added with reinforcing elements to make the optical cable have good tensile properties
光缆结构简单，重量轻，实用性强
The optical cable has the advantages of simple structure, light weight and strong practicability
独特的凹槽设计，易剥离，方便接续，简化安装和维护
Unique groove design, easy to peel, easy to connect, simplify installation and maintenance
低烟无卤阻燃护套，环保
Low smoke halogen-free flame retardant sheath, environmental protection
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