I don't think it's Hendra Setiawan. Hendra Setiawan uses a AT800DEF. I'm tempted to say Candra, but the griping style isn't Candra. Could it be Alvent?
play single : can notice that footwork..... old racket : Yonex At700 old shoe : hmm....... cant recall the model old photo......... let think think think.......