Plexiglass is a synthetic plastic product, tempered glass is the product of ordinary glass after tempered treatment.
Plexiglass light, toughness, bending performance, easy to work, hardness, wear resistance, strength, impact resistance, transparency than toughened glass. So plexiglass is very versatile.
The disadvantage of tempered glass is that it is heavy, can not be processed again (to be processed in a good shape or hole before tempering treatment), and its surrounding side face has the weakness of poor impact resistance, and there is a small probability of self-explosion (without any warning of self-explosion). The advantages are good strength (standing individual dancing is no problem), good wear resistance, high transparency, after breaking a non-sharp granular. Therefore, bulletproof protective gear often uses toughened glass, high-rise building doors and Windows, glass curtain walls and other places also often use it.
If you want to ask which kind of glass is better, it depends on the situation, they have their own advantages and disadvantages, so their good or bad also depends on where you want to use it, you pay more attention to the convenient performance. If you don't know what to choose, you can compare their features, choose the one you care about the most and avoid the one that is the most fatal to you.