It has strong self-lubricating performance that can reduce friction coefficient accordingly.

It doesn't need running in time and very stably, It can decreases the yarn breakage and feather.

The surface hardness reaches HV1300-1500, so it has strong abrasion resistance. Its working life is longer than normal ring 2-3 times.

It is excellent with heat stability and also anti-corrosion. It is best choice to spin compact spinning and various of top-grade yarn spinning.