ITP’s current PET World Trade Report combines these products for historic continuity. In 2017, the World Customs Organization created new Harmonized System codes that separately identified bottle grade polyethylene terephthalate with a viscosity equal to or greater than 78 ml/g and PET with a viscosity less than 78 ml/g, generally used in film and fiber. ITP now follows these products separately, as well as combined. In 2019, ITP analyzed nearly 9 million tons of trade in bottle grade PET in 2019 and 4 million tons of PET for film and fiber.