With high-temperature resistant liquid polyester resin as the carrier, high-temperature resistant color oil produced by fine grinding can be used for PET blowing and coloring, PET beverage bottles, PET cosmetic bottles, can replace masterbatch, high-temperature resistant nano-colored oil has a fineness that masterbatch does not have at all, after fine grinding and low-temperature dispersion treatment, the fineness can reach less than 500 nanometers (it is one-50th of the fineness of ordinary masterbatch pigments, it can be completely free of noise and black spots, has high transparency, is used for various linear materials and nonlinear materials, and has excellent compatibility, It is compatible with almost all thermoplastics and thermosetting polymers on the market, and all colors can be customized. The following is a shot of the actual bottle blowing