feature:The mug is equipped with a pen in
specialized ink,also the surface of the mug is
made through special processing.We can writing and
drawing on it with fitted pen.and it Will
infiltrate into color ink layer which is invisible
to the room temperature, when we add hot water,
temperature reach 43 degrees of the surface ,we
will see what we write just now.
For example:we can write some words and our names
on the mugs before we send a gift to our friends
or teachers. when they drinl water they will see
the blessing we write to him,what a good feeling it is!