Is your trumpet valve casing brush “pseudo nylon”? Aoqun teaches you to distinguish.

1. Surface glossiness: smooth glossiness and no particles when viewed from a distance;

2. Recovery performance: short-term bending can be restored instantaneously, after long-term bending, it can be recovered by heating with warm air;

3. Combustion: Combustion is slow. The inner layer of the flame is light blue and the outer layer is yellow. It emits white smoke, and the smell is similar to that of feather burning;

    After using "pseudo-nylon" Trumpet valve casing brush for a period of time, it will have problems such as hair breakage and deformation, short life, frequent replacement and higher cost. Aoqun provides a cost-effective trumpet valve casing brush, which can be known once.