... , durable use 4.TAIWAN class B woolen cloth surface Tennis ball FT-30Material: TAIWAN class B woolen cloth surface and ... , medium and low-grade tennis rackets, badminton rackets, and tennis, shuttlecocks; every kind of high, medium stringing machines, screen wires, strings, ... have won the awards of tennis and badminton association and appointed as special products used by BOBBY ERTANTO, who was ...