I for Daily Use?great for coffee, milk, espresso, cafe latte, tea, cappuccino, mochaccino, tea, or your favorite beverages. These espresso cups are made of durable porcelain, non-toxic, lead- and food-grade. d to plastic, it is healthy for the human body, and it is also environment-friendly, safer for your families and guests. Product Name: Tea Cup Set Product material: Ceramic Product Size: Please check our size chart. Product color: Black , Green , White Package List: Set of 6 : 1 * Teapot, 4 * Cup,1 * Ceramic Tray About the maintenance of porcelain: 1. When the surface of the porcelain is stained with oil, clean it with warm water. If it is not easy to clean, put some vinegar, add water and then wash. 2. If there is scratch on the surface, you can use a toothpaste to gently polish it. When you use a damp cloth or hand to clean it, you should pay attention to the strength. 3. Do not place the heated ceramic directly in cold water to avoid damage to the porcelain. 4. If there is tea stain, you can wash it with lemon juice or vinegar. 5. It is not to put in the dishwasher.