PMMA, whose chemical name is polymethyl methacrylate, also known as acrylic or plexiglass, is an important thermoplastic developed earlier. The transparency of PMMA is extremely high, reaching over 90%, and the light is soft. PMMA dyed with dyes also has a strong color rendering effect, so it is widely used to make glass substitutes and other transparent products.

Moreover, PMMA has good weather resistance, and it will not appear obvious aging and discoloration when used in outdoor environment for a long time, and it can maintain stable performance in various environments. Its impact resistance is also excellent, and it is not easy to crack or break even in the case of heavy blow or impact, which improves its use safety.