1. We will printed the red first, then the Blue color on the red parts, then yellow on the mixed part ( red + blue) , then Black on the mixed part
( red+blue+yellow)
but the worker can not control the same strength when mass production.
maybe they print more red , or more blue. then the photo will be change to others color.
The mass production goods, all the printing will be not in same colors.

2. Screen density is 50 to 70 dpi.

1. Screen density is 150 dpi
2. Each color will be not excursive , all the color will be same color and effect

But it have a problem too, it only can printed on white pvc material, or transparent color pvc .