This is a magical cup will change, when injected into the hot water to the cup, the cup's outer wall will gradually from black (blue) to white, while the photo printed on the cup or long pattern will emerge; And when the cup slowly cooling, will gradually change back to black (blue), photo or logo will disappear again. Faced with such a magical gift, I believe it will certainly receive music blossomed. Bar cup ceramic cup made using premium quality ceramic cup exit, has passed FDA drug testing to ensure high temperature non-toxic. The color bar color cup cup process: ceramic color cup and glass color cup into hot and cold color discoloration and water color, thermochromic temperature is above 40 degrees Celsius, color change, color cup cold temperature is 20 degrees Celsius When the color changes, water color is still not universal. Their principle is: temperature material printed in the cup body, the materials used are heat-sensitive materials, high temperature 320 degrees Celsius, non-toxic, lead-free, chromium, can reach European standards. According to design a piece of artwork design, plate making, printing, drying, baking, and then packaged! Contact: Miss Liu QQ: 335166885 Website: www.beiziba.com