1 First of all, we should know how to use the elastic rope, and what are the requirements in the process of use, such as elastic coefficient, stretch ratio, breaking strength, heat/cold/moisture resistance, sun protection, etc. We can contact suppliers according to these requirements, and sometimes suppliers will give some suggestions.

If there are certain high requirements, it is recommended to ask the supplier for a sample to do the test yourself (when doing the test, you must know clearly that the elasticity of the elastic rope will have a certain deviation, which will not be much, but if you understand this, some machines will avoid trouble, because the machine is dead and the elastic rope is alive).

2. The material of elastic rope will also affect the use.

If this product needs to be stretched for a long time, it is recommended to use elastic rope made of imported materials, which is basically not deformed. Deformation and aging are two different things here. Deformation, the popular understanding is whether the stretched elastic rope can be restored to its original length. Aging means that the elastic rope has been used for a long time and has worn out, so it is not enough to be used again. If the elasticity of the elastic rope is not high, then the domestic one is ok, and the price will be cheaper than the imported material.