JSM products are the best choice for domestic accessories to replace imported products. 

1. High-precision processing equipment ensures the processing quality and consistency of key components. 

2. We develop specific and targeted grooves for customers according to the special requirements of users' yarns.

3. Diamond surface coating has special friction field, and different fiber varieties and twist requirements are subject to different surface treatment schemes to minimize twist loss.

4. The life expectancy is 25,000 hours (the actual life varies according to the fiber variety, impurity content and number of spins).