Through Authenticate 
1. New product patent Pat.M413523.
2. SGS certification.
3. Using simulated texture to updat natural shuttlecock.
4. The feather is made from combination materials invented by Youlong, with features of lightness, great toughness, extensive durability, enhanced resistance to cold.
5. The quality of the feather reaches almost 90% of similarity to natural one, which guarantees the performance of flight and rotating speed.
6. This shuttlecock is aimed for practice and resembles the speed and trajectory of one constructed from natural feather.
Easier for players to get used to natural shuttlecock in game play.
