自承式接入網用蝶形引入室內光纜是將光通信單元處于中心，兩側放置兩根平行加強元件（GFRP/KFRP/鋼絲），在側再附加一根鋼絲加強元件，**，擠制黑色或彩色低煙無鹵護套成纜。

耐彎光纖，提供更大的帶寬，增強網絡傳輸特性
Bend resistant fiber provides greater bandwidth and enhances network transmission characteristics
兩根平行加強件使光纜具有良好的抗壓性能，保護光纖
Two parallel stiffeners make the optical cable have good compressive performance and protect the optical fiber
單根鋼絲附加加強元件，使光纜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
光纜結構簡單，重量輕，實用性強
The optical cable has the advantages of simple structure, light weight and strong practicability
獨特的凹槽設計，易剝離，方便接續，簡化安裝和維護
Unique groove design, easy to peel, easy to connect, simplify installation and maintenance
低煙無鹵阻燃護套，環保
Low smoke halogen-free flame retardant sheath, environmental protection