The technicians of the R&D department of Shanghai Jingtao Steel Belt Technology Co., Ltd. conducted in-depth research on the front line, discussed with users the use and maintenance of the pelletizer, and listened to the user’s reasonable suggestions. After more than two years, the fourth generation pelletizer was finally developed. Compared with the generation granulator, the 4th generation granulator head structure is more reasonable and compact, the maintenance is simpler and time-saving, the problem of material seepage is effectively solved, and the particles are more uniform and full. The 4th generation granulator is suitable for forming materials with various viscosity.