350ml Diy ceramic color-changing mug heat discoloration custom design cup Capacity: 300ml 350ml Material: Ceramic Cap: Wood or ceramic material Surface: Deco/hot stamping/silk printing/labeling… customized Packing: Carton then  pallet Certificate: ISO MOQ: 100 pcs Samples:  Free Features: You can print your company name, your name, or the picture which you like on the surface of this cup. When you fill hot water(more than 60 degrees) on the …