3903909060 - Copolymer of styrene with maleic anhydride, either partially esterified or completely chemically modified, of an average molecular weight (M@n) of not more than 4500, in flake or powder form Harmonized System Codes, Taric Code, HS Code, HTS Code, Harmonized Commodity Description, Commodity Codes, Classification of goods, Tariff Nomenclature, Customs Tariff Number, Tariff Classification.