1. Clothing: (before admission)
1. The costumes of teams in team events and doubles must be consistent;
2. The background color of the clothing cannot be the same as the color of the ball;
3. When the clothes of both sides are the same, draw lots to decide, and the loser will change clothes.
Number cloth: athletes must wear it and check it against the order book; (After admission)
Racket: (after admission)
1. Check order: (1) Practice before the game to avoid delaying the game; (2) Any racket must be presented to the referee and opponent before use; (3) Athletes must accept the referee's ruling on factual issues. If they don't accept it, they should immediately report to the referee.
2. Inspection contents: (1) The cover of the hitting surface must be bright red and black; (2) The striking part of the bottom plate must be covered (the tolerance is 2mm); (3) ITTF logo. When the referee is in doubt, report to the referee; Referees should consider the opinions of their opponents, and it is usually best to replace them.