How to select the right glass cup in shop or supermarket

When you find a very beautiful glass cup or bottle in a shop or supermarket, please don't hurry to buy it and begin to use it, please check the temperature limitation first, as the notice on the glass cup in picture, the limitation is only 70℃, it means you can use it for hot water, tea or coffee.

Why the temperature is different? They all look like made of glass.

That's because the materials are different:
Normal glass is also called Soda-lime glass, mainly made of Silica, low cost, pooer heat resistant and more impurities, if temperature is above than 80℃, it has the risk to burst
Our products are all made of borosilicate, with low expansion rate, high temperature resistance, high strength, high hardness, high light transmittance and high chemical stability, and the temperature is -20~150℃

So make the right choice and don't buy and use it blindly