Plastics ingredient is a term used to describe the various components that are used to create plastic products. The three most common ingredients are RESIN, urea, and styrene. RESIN is a solid or highly viscous substance of plant or synthetic origin that is typically used as an adhesive or a sealant. Urea is an organic compound that is used as a fertilizer, a raw material for the chemical industry, and a plasticizer. Styrene is an aromatic hydrocarbon that is used in the production of polystyrene plastics and resins.