... 1.Use the borosilicate glass as material, clear, eco-friendly, good-touch feel.2. Expansion coefficient:3.33.Resist ... sharp high temperature very well.-20-150 degree4.Good decay resistance to the acid, alkali chemical substance ... wine, beer, coffee, tea, and even kid-friendly beverages such as milk, juice, or hot cocoa. ... kind inquiry , dear friend! bake LOGO eco-friendly heat resistant glass teapot