7410210070 - Plates or sheets: -|with at least one layer of woven glass fibre, impregnated with a fire- retardant artificial or synthetic resin with a glass transition temperature (Tg) of more than 130|°C as measured according to IPC-TM-650, method 2.4.25, -|coated on one or both sides with a copper film with a thickness of not more than 3,2|mm, and containing at least one of the following: -|poly(tetrafluoroethylene) (CAS|RN|9002-84-0) -|poly(oxy-(2,6-dimethyl)-1,4-phenylene) (CAS|RN|25134-01-4) -|epoxy resin having a thermal expansion of not more than 10|ppm in length and width and not more than 25|ppm in height for use in the manufacture of circuit boards Harmonized System Codes, Taric Code, HS Code, HTS Code, Harmonized Commodity Description, Commodity Codes, Classification of goods, Tariff Nomenclature, Customs Tariff Number, Tariff Classification.