The elasticity of plastic ping-pong pepper ball will directly affect the experience of plastic ping-pong. There are several factors that affect the elasticity of plastic ping-pong pepper ball, such as material, hardness of material and accuracy of plastic ping-pong pepper ball.

1. Material factor: There are several kinds of materials for plastic ping-pong pepper balls, such as ABS, PC and PVC. These three materials are the first choice for plastic ping-pong pepper balls because of their good mechanical properties and easy printing.

2. Hardness of the material. Generally speaking, the harder the material is, the worse its elasticity is, and it is easy to break. The normal hardness of the material should be around 90 degrees.

3. Precision factor: The plastic ping-pong pepper balls need to be grinded on a special ball grinder for plastic pepper balls in the manufacturing process. The purpose of grinding is to make the precision of plastic ping-pong pepper balls within ±0.02mm, and only the plastic ping-pong pepper balls with high precision will have good elasticity.