1. The unique engineering plastic formula, with high temperature and high pressure, aging resistance, and corrosion resistance.Combined with the advantages of domestic and foreign bobbin and feedback from manufacturers, the shape and hole shape are carefully designed and manufactured to minimize the waste of bottom yarn.3. The barrel has high fastness and high penetration.4. Warm air drying effect is good5. It can be used with various imported or domestic trough barrel machines and dyeing machines.6. Can be used for all kinds of fiber dyeing and before and after treatment process, for all kinds of dyes dyeing process.