Thornton Plastics is a company specializing in plastic vials, containers, jars, and pill bottles. Founded in 1948, the company initially offered Christmas bells, screwdriver handles, and plastic tumblers before expanding to clear and amber-colored plastic vials with snap-on caps in 1955. Over the years, Thornton Plastics focused on vial production, offering various sizes and colors to pharmacies and hobby stores. The company has evolved under the leadership of Wayne Thornton's family members, with a current product line including snap-cap vials in 14 sizes and hinged lid containers.