Polystyrene is widely used in the packaging industry due to its lightweight and durable nature. It is commonly molded into protective packaging for electronics, appliances, and food containers, ensuring safe transportation and storage. In the food industry, it serves as an excellent insulator for disposable cups, plates, and trays, maintaining temperature and preventing leaks. Additionally, polystyrene is utilized in the construction sector as insulation material for walls, roofs, and foundations, enhancing energy efficiency in buildings. Its versatility also extends to the production of consumer goods, such as toys, household items, and casings for electronic devices, owing to its ease of molding and cost-effectiveness. In medical applications, it is used for petri dishes, test tubes, and other lab equipment due to its transparency and sterility.