1.May at any time quick mark, easy to use, simple operation, not glue the hand, a cross namely,
indoor and outdoor can be work; Resistance to wet, persistent; Bright color.
2.Crayon safe nontoxic, clear handwriting, not easy fade, the number identification is used for
livestock management, or the condition of livestock health management records,
Distinguish between mating of livestock breeding.
3.Can be all-weather use. In animals can keep 7 days.