Glass is one or more transparent materials of guinates, which can be classified according to their raw materials, ingredients, chemical composition, color, etc .
It can be divided into:
1. Soda-lime glass is a more common glass used for making bottles, cups, lampshades and low-cost presses.
2. Lead-containing glass can be made into crystal glass, which is smooth and clean. It is more suitable for tableware and decorations.
3. Colored glass, oxides of various metals, can be added to glass to obtain glasses of various colors.
For example: cobalt oxide is used to make blue glass, and manganese dioxide makes the glass purple.