Polycarbonate and HDPE sheets are very strong plastic materials. They are used a lot in construction and security because they are: Very tough and impact resistant Hard to break or crack Good protection against weather, UV rays, and chemicals Lightweight and easy to install People use them for security windows, bulletproof shields, protective barriers, machine guards, roofing, skylights, riot shields, and building safety parts. Here is a list of the top 10 global Polycarbonat