If the substrate is acrylic, the surface must be pre-treated before printing with coating liquid.

As a result UV ink will adhere more firmly to the smooth surface, will have better performance and color fastness.

If you print directly on some smooth non-absorbent substrates, the final print quality will be poor, but it will be perfect after the coating process.

Regardless of whether the printed piece is bent, folded or placed for a long time, there will be no cracks on the surface.

The coating liquid is made of a special chemical component.

It can dry within 3 minutes after spraying, especially on smooth materials.

After pretreatment, the ink has a superior contact with the materials, and the finished print is far more wear-resistant and waterproof than a print without pretreatment.