Para-aramid has all of the properties you want in a speargun line. It's ultra high strength, ultra low stretch and superior knot retention mean that once tightened your constictor knot will stay tight. Avoid the problems of knot creep or stretch inherent in other high performance fibers. This line is excellent for a multitude of applications including model rocketry and fire poi.

The general characteristics of  Para-aramid are: High Modulus, High LASE (Load At Specified Elongation), High Tensile Strength at Low Weight, Low Elongation to Break High Modulus, (Structural Rigidity), Low Electrical Conductivity, High Chemical Resistance, Low Thermal Shrinkage, High Toughness (Work-To-Break), Excellent Dimensional Stability, High Cut Resistance, Flame Resistant, Self-Extinguishing.

The baofeng  Para-aramid rope could be a best choice for your business

Color: Ecru Yellow or customized
Structure: 16, 8 strands braided
Dia.; 6mm Packing; 100m/coil
white high tenslie strength High strength
Reasonable price
Becautiful packing
Used in home, marine outerdoor,fishing and so on