Borosilicate glass cup 1.Material:borolisicate glass. 2.Made by hand. 3.Our products have good quality. 4.Factory selling Borosilicate glass cup:Applicable to heat-resistant , Fine workmanship ,easy to use, suitable for the family, coffee house, teahouse, restaurant and office.Quality certificate: environment-friendly borosilicate glass, nontoxic and inodorous,safe for food, have passed the green ...