The manufacturing technology of precision plastic pepper ball shell is made by welding two hemispheres, while ordinary plastic pepper ball shell is produced by blow molding process. Because of different processes, the quality of the manufactured plastic pepper ball shell is the same. The precision plastic pepper ball shell has high strength and good precision, and can be used as functional accessories in industries such as industry, machinery and electrical appliances.Ordinary plastic hollow ball can only be used as a cover hollow ball on some liquids because of its low precision and strength. After the shell of precision plastic pepper ball is made into a hollow blank ball by welding process, it needs to be professionally ground by a special pepper ball milling machine. The precision of precision plastic pepper ball shell can reach within ±0.02MM, which can basically meet the requirements of customers for precision plastic pepper ball shell.