Laminated glass, also known as laminated glass or laminated safety glass, is made by sandwiching one or more layers of organic polymer materials between two or more glass substrates and subjecting them to high temperature and high pressure treatment. If you want to confirm whether a piece of glass is laminated glass, you can try the following identification methods:

1. Sound identification method: Gently tap one end of the glass with a hard object. If the sound heard is dull, then this piece of glass is likely laminated glass. On the contrary, if the sound is crisp, it may just be ordinary glass. The reason is that the plastic interlayer inside the laminated glass can effectively absorb the impact force, making the sound dull.

2. Cutting observation method: Use a glass knife or saw to cut a small piece on the glass, and then carefully observe the internal structure of the cutting surface. If two layers of glass and one layer of plastic interlayer can be clearly seen, then this piece of glass is undoubtedly laminated glass.

Please be careful and cautious when performing the above operations to avoid unnecessary damage to the glass. If you have any questions about the identification process, it is recommended to seek assistance from professionals.