... :1.Use the borosilicate glass as material, clear, eco-friendly, good-touch feel.2. Expansion coefficient:3.33. ... health tea and so on. Widely used in coffee, hotel, teahouse, restaurant and so on. also be gifts ... serving wine, beer, coffee, tea, and even kid-friendly beverages such as milk, juice, or hot cocoa.Detail ... your kind inquiry , dear friend! bake LOGO eco-friendly heat resistant glass teapot