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There is no limit to the size, shape and weight of the racket, but the bottom plate should be flat and hard.
The thickness of the base plate should be at least 85% natural wood, and the adhesive layer of the reinforced base plate can be made of fibrous materials such as carbon fiber, glass fiber or compressed paper, and each layer of adhesive layer should not exceed the total thickness of the base plate or millimeters.
The surface of the racket used to hit the ball should be covered with a layer of ordinary granular glue with outward particles, and the thickness of the adhesive should not exceed 2 mm; or cover with sponge glue with particles inward or outward, together with adhesive, with a thickness of no more than 4 mm.
"Ordinary granular rubber" is a layer of non-foaming natural rubber or synthetic rubber, the particles of which must be distributed over the entire surface at an average density of not less than 10 and no more than 50 particles per square centimeter.
Sponge glue is covered with a layer of ordinary granular glue on a layer of foam rubber, and the thickness of the general granular glue is not more than 2 mm.
The covering should cover the entire surface, but not beyond its edges. The part close to the handle and the finger grip can be left uncovered or covered with any material.
The base plate, any interlayer in the base plate, the covering and the adhesive layer should be a whole of uniform thickness.
The racket must be matte on both sides, with or without covering, and be bright red on one side and black on the other. The edging on the edges of the body should be matte and not white.
Accidental damage, wear or fading can result in slight differences in the integrity and color consistency of the surface. As long as there is no significant change in the performance of the paddle, it can be used.
At the start of the game and when the player needs to change the racket, he must show the opponent and the referee the racket he will use and allow them to inspect it.
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Table tennis game rules.
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The rules of table tennis rackets are as follows:
1. There is no limit to the size, shape and weight of the table tennis racket, but the bottom plate should be flat and hard.
2. The thickness of the bottom plate of the table tennis racket should be at least 85% of the natural wood, and the adhesive layer of the reinforced bottom plate can be made of fiber materials such as carbon fiber, glass fiber or compressed paper, and each layer of adhesive layer should not exceed 7.5% or millimeters of the total thickness of the bottom plate.
3. The paddle surface used to hit the ball should be covered with a layer of ordinary granular glue with particles facing outward, and the thickness of the adhesive should not exceed 2 mm; Or the ligands are covered with sponge glue with particles inward or outward, together with adhesive, with a thickness of no more than 4 mm.
4. The paddle surface used to hit the ball should be covered with a layer of ordinary granular glue with the particles outward, together with the thickness of the adhesive.
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Legal serve. When serving, the ball should be placed on the palm of the non-clapping hand, with the palm open and flat. The ball should be stationary, behind the end line of the serving side and above the level of the playing table.
The server must throw the ball almost vertically upwards with his hands, without spinning the ball and causing the ball to rise by not less than 16 centimetres after leaving the palm of the non-clapping hand.
When the ball descends from the highest point of the toss, the server can hit the ball so that the ball first touches the local table, then passes over or around the net device, and then touches the receiving player's table. In doubles, the ball should touch the right half of the server and receiver in succession.
From the moment the ball is served until it is struck, the ball must always be above the level of the playing table and outside the end line of the server; And from the receiving side, the ball cannot be blocked by the body of the serving player or his doubles companion or by anything they are wearing (carrying).
As soon as the ball is thrown, the server's non-racket arm should be removed from the space between the ball and the net. The space between the ball and the net is defined by the ball and the net and their upward extension.
When a player serves, it is his responsibility to let the referee or sub-referee see whether he is serving in accordance with the rules of legal serving.
If the referee doubts the correctness of a serveer's serve, and neither he nor the assistant referee is convinced that the serve is illegal, the referee may warn the server for the first time in a match and not award a score.
In the same match, if the correctness of the player's serve is again in doubt, whether or not for the same reason, no more warning is awarded and a point is lost.
Whether it is the first time or at any time, if the server clearly does not serve in accordance with the rules of the legal serve, he will be awarded a point and no warning will be required.
If a player is unable to strictly comply with certain rules for legal serving due to a physical injury, the referee may decide to exempt him/her, provided that the referee explains it to the referee before the match.
Fight back legally. After the opponent serves or returns, the player must hit the ball so that the ball passes directly over or around the net device, or touches the net device and then touches the opponent's table.
Order of play. In singles, the server serves the ball legally, then the receiver returns the ball legally, and then the two alternate legally.
In doubles, the server serves first, then the receiver responds legally, then the server's partner responds legally, and then the receiver's partner responds legally, and then the player takes turns to fight back legally.
Re-serve. A re-serve shall be awarded in the following cases of the round:
If the ball is sent by the server, when it crosses or bypasses the net device, touches the net device and thereafter becomes a legal serve or is blocked by the receiving player or his companion.
The ball has been sent if the receiver or companion is not ready: and neither the receiver nor his companion attempted to hit the ball.
The athlete is unable to serve legally due to interference beyond the player's control. Fight back legally or follow the rules.
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