Use for:Gel pen nib of 0.5mm,0.55mm,0.6mm.
Using effect: withing 5-30minutes disappear totally.
Color:Blue black 
Packing:25kg a bucket
Safe level:non-toxic

Advantage:

1.Clothes,furniture,wall  can be kept clean if use the disappear ink.
It won't leave any mark .

2.Sample available.
3.5years making experience,guarantee you the best quality.