That's my guess too. But I thought I'd better post it out there and crowd source ideas. I certainly did not recognize that logo.
http://www.badmintoncentral.com/forums/attachment.php?attachmentid=160528&d=1405497917 Looks familiar? See: http://www.badmintoncentral.com/forums/showthread.php/144620-Lin-dan-with-yonex
2009 lin dan began to think self-own brand, Not surprising. if 2019 listed, LD brand he has been successful first step. But he will lose something more, the road ahead is difficult.