The description of the item 7019400011 of Germany HScode: Woven fabrics of glass fibres made from rovings : Woven fabrics of rovings, impregnated with epoxy resin, with a coefficient of thermal expansion between 30°C and 120°C (measured according to IPC-TM-650) of: -|10ppm per°C or more but not more than 12ppm per°C in the length and width, and -|20ppm per°C or more but not more than 30ppm per°C in the thickness, with a glass transition temperature of 152°C or more but not more than 153°C (measured according IPC-TM-650) Open mesh fabrics of glass fibres, of a cell size of more than 1.8|mm both in length and in width and weighting more than 35|g/m², excluding fibreglass discs