Trimmer line is made of kinds Nylon materials, including Nylon 6, Nylon 66, Nylon 610, Nylon 6&66 Polymer, choose which material is according to machines varieties and characteristics.
Fracture Strength is usually required to reach above 180kg, otherwise the line will break, and may cause damage.
Wear Resistance is usually required to reach above 550kg, otherwise the lines using life is short.
If Raw materials used to meet the above criteria, the proportion of additive formula is appropriate, this standard is not difficult to achieve.
The special testing method can refer to the standard of Green-Spares Co.,Ltd.