color changing mug

color changing mug,it's a ceramic mug,when you put hot water/tea/coffee inside of the mug,the color of mug will change and the picture will come on that.You can put your logo or design on these as a promotion also,it's a very good promotional item.
DESCRIPTION:COLOR CHANGING MUG
PRODUCT MATERIAL:CERAMIC
PRODUCT SIZE:8CM(DIAMETER)*9.5CM(HEIGHT)
QTY/CTN:50PCS
PACKING:EACH ONE WHITE BOX
CTN SIZE:55*52*22CM