悠九專業玩家郭博翰+空 Yonity present Kuo, Po-Han with Kung

悠九4A專業玩家郭博翰所使用的溜溜球是我們最近出的空

The yo-yo Kuo, Po-Han used is Kung by Yonity.

http://yonity90.blogspot.com/2012/01/kung.html