1. Screen printing, film production, and printing costs are high;
2. The color correction is complex and cannot be modified once the edition is made;
3. Complicated process and long production cycle;
4. Screen printing points cannot be eliminated, which requires mass production;
5. Thermal transfer printing USES thermal sublimation ink to print the picture on transfer paper and then transfer it to the surface of the medium. There are several difficult problems: color deviation and positioning deviation. In addition, special media transfer printing also needs to do flexographic printing.
6. Traditional signage production generally adopts the method of engraving, etching and color paint filling, or adopts laser engraving, which can only produce monochrome signs, but is useless for color patterns.
7. Multiple over printer scrap rate is high, with large color deviation.
8. Need skilled printing technicians with years of rich experience.9. More people need to make products by hand.