1, material selection: Cuju production needs to choose suitable materials, including ball skin and filler. In ancient times, cuju was mostly made of leather or silk wool, but in modern cuju, many materials can be used, such as rubber and PU. Choosing suitable materials can ensure the quality and service life of Cuju.

2. Shape and size: The shape and size of Cuju need to be unified in order to maintain the fairness and appreciation of the game. There is no uniform standard for the shape and size of ancient cuju, but there are clear regulations for modern cuju. When making cuju, it needs to be made according to the regulations to ensure that the shape and size of cuju meet the standards.