... mainly produces,mug,ceramic mug,color changing mug,Sublimation mug,gift mug,coffee mug,coffee cups ... gift,Promotion gift,Business gift,Daily-use ceramic,stonewere ,mug.as also make Advertising mug,gift color changing ... mug,promotion mug,etc.but we have mainly produces in color changing The color changing mug advantage:1.Feature:before color changing and after color changing ...