Qunlon Flying lines using high quality Dyneema fiber, red, blue and yellow to distinguish different locations; hard coating processing smoother and more anti-absorbent; through the drawing process, reducing the elastic of the line and the narrow line thickness, reducing wind resistance and more sensitive control; processing flight line stretched through the power cut; two outer wear red, blue, gray sheath hollow rope and 1-4 digital indicate, a more accurate location of downline and connect the left and right lines; Z-sewing more beautiful and reduce the force to pull off the flight line;