Some people like to drink water with transparent glasses. Whether the water inside is clean can be seen clearly. Others like to use glasses to contain colored liquid. In this way, the whole looks very good and good-looking photos can be taken. Glasses are widely used. Are they made of what material? What are the classifications of glass materials? Let’s take a look with our Yongkang glass manufacturer.
1. Sodium calcium glass water cup is also the most common glass water cup in our life. Its important components are silica, sodium oxide and calcium oxide. The water cup is made by mechanism and manual blowing. It is cheap and is a daily necessities. If sodium calcium glassware is used for drinking hot drinks, it usually needs to be tempered before leaving the factory, otherwise the cup will crack when the temperature difference is too large.
2. High borosilicate glass water cup, named for its high content of boron oxide. The tea set and teapot commonly used for making tea can withstand the change of large temperature difference without cracking. But this kind of glass looks light, light and feels bad.
3. Crystal glass water cup is a high-end product in glass. Because it contains many metal elements, its refractive index and permeability are very close to natural crystal, so it is called crystal glass. There are two kinds of crystal glass, lead crystal glass and lead-free crystal glass. Lead crystal glass is not recommended for consumption, especially when drinking acidic drinks with water cups. Lead will dissolve into acidic liquid, and long-term consumption will cause lead poisoning. Lead free crystal contains no lead element and is harmless to the body.

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