Polymer sheets are flat materials made from long chains of molecules called polymers. These sheets are known for their durability, flexibility, and resistance to chemicals and moisture. Commonly used in various industries, they can be found in applications such as packaging, construction, and automotive parts. These sheets come in different types, including polyethylene, polypropylene, and polyvinyl chloride (PVC). Each type has unique properties that make it suitable for specific uses. For example, polyethylene is often used for packaging due to its lightweight nature, while PVC is popular in plumbing and electrical applications for its strength and resistance to corrosion.