Younix. Yy is a world-famous brand of sports goods by Younex. In 1946, Shanfeng established Yoneyama Company, which initially produced fishing nets and wooden drifts. In 1957, it began to transform into golf, tennis and badminton products. In 1979, the name and trademark of the company were changed to Yonex. The badminton racket produced by Younex occupied the first place in the world, and the tennis racket was also loved by many famous stars.