The 8-strand braided PE line (polyethylene braided line) in fishing lines has a significant improvement in performance compared to the traditional 4-strand braided PE line. The following are its main advantages:

A more rounded line (closer to a circle) :
Advantages: The 8-strand braided structure is tighter and more uniform than the 4-strand one, making the cross-section of the thread closer to a perfect circle.
Benefits
Reduce friction: A rounder line body has less frictional resistance when passing through the guide ring.
Increase the throw distance and smoothness: Lower friction means smoother line ejection, which helps to achieve a longer throw distance, especially when using fine fishing sets or lures, the effect is remarkable.
Reduce wear on guide rings: Cause less wear on guide rings (especially expensive ceramic guide rings).
Higher linear density (more compact) :
Advantages: The greater number of strands in weaving results in smaller gaps between fibers and a denser thread structure.
Benefits
Reduce water absorption rate: Denser weaving reduces the space for water molecules to penetrate into the interior of the thread, resulting in slower and less water absorption by the thread. This means that the line gains less weight after long-term fishing, and its casting performance and sensitivity are less affected by the weight of water.
Enhancing wear resistance: Although the wear resistance of PE thread itself is not as good as that of nylon or carbon thread, the denser structure makes 8-strand thread have relatively better wear resistance than 4-strand thread with the same tensile value (especially when dealing with rocks and obstacles).
A smoother surface
Advantages: The rounder and denser structure naturally brings a smoother surface touch.
Benefits
Reduce wire entanglement (release of the gun) : When throwing, the wire cup exits the wire more smoothly, reducing the risk of the wire entangling with each other during the exit process (” stir-frying the powder “) or suddenly getting stuck and causing the wire to break (” release of the gun “).