1.heat resistant glass tea cup 2.eco-friendly 3.bright and ... security7. Mainly applies to:green tea, black tea, fruit tea, puer tea, scented tea,blooming flower tea, health tea and so on. Widely ... choose borosilicate glassware?Intricately handcrafted of mouth-blown borosilicate glass - the same material used to make scientific lab ... kind inquiry , dear friend! heat resistant borosilicate glass tea cup