The high borosilicate glass cup has strong heat resistance. Take the glass cup out of the freezer and immediately fill it with freshly boiled hot water. The glass cup will not break, and there is no problem from minus 20 degrees Celsius to minus 130 degrees Celsius. Single layer high borosilicate glass products can be directly heated in the microwave and can be dried on an open flame for 20 minutes without any problem. High borosilicate mainly makes glass products, microwave supplies, solar tubes Chemical reaction containers are widely used and are currently one of the safer drinking water supplies in the world. Apart from being expensive and fragile, they have almost no drawbacks.