Plastics and polymers are fundamental materials used in almost every industry, from packaging and construction to automotive and medical applications. These synthetic materials, derived from petrochemicals or bio-based sources, offer durability, flexibility, and cost efficiency. Common types include polyethylene, polypropylene, PVC, and PET, each serving specific functions based on their properties. Advanced engineering polymers provide high strength, chemical resistance, and lightweight alternatives to metals in manufacturing. The industry is evolving with innovations in biodegradable plastics and recycling technologies to reduce environmental impact. With growing demand for sustainability, circular economy models and bio-polymers are gaining traction. Plastics and polymers remain indispensable due to their versatility, adaptability, and continued advancements in material science.