UPC Bottles | Boston Rounds, Droppers, Sprayers & more boston round, bottle, glass, plastic, crc dropper, lotion pumps, essential oil, packaging, wholesale, amber, packer, wide mouth, wine bottles, glassware, spray bottles UPC Packaging is a rigid packaging supplier, offering a variety of glass bottles and plastic bottles, containers and closures. Specializing in child resistant crc droppers, Spray Bottles, caps and closures.