Polyethylene is a versatile and widely used synthetic polymer, known for its durability, flexibility, and resistance to moisture. It is one of the most common plastic materials in the world, found in products ranging from packaging materials, plastic bags, and bottles to toys, pipes, and even medical devices. Polyethylene is produced through the polymerization of ethylene, a simple hydrocarbon, and can be made in different densities (low-density, medium-density, and high-density) to suit various applications. Its affordability, recyclability, and ease of processing make it a staple in industries across the globe.