AKROH manufactures an identification system for cows. Number blocks in different colors makes it easier to read the complete number, see below for the colors. In case you would like more information, please contact us.
Colors:
No-0 : anthracite / ivory
No-1 : yellow / anthracite
No-2 : orange / anthracite
No-3 : red / anthracite
No-4 : purple / anthracite
No-5 : blue / anthracite
No-6 : green / ivory
No-7 : grey / anthracite
No-8 : brown / anthracite
No-9 : ivory / anthracite