Speciality plastic and fibre products supplier Filtrona is on a roll after performance was 'consistently strong throughout 2010'.Since the company made its interim management statement on 20 October the company has continued to trade in line with expectations.Though the final figures for 2010 need to be audited, the company expects to report revenue growth of around 10% from 2009's levels, or a gain of 8% at constant exchange rates.Net debt at the end of the year was around £91m, down from £107m at the end of 2009.In the Protection & Finishing Products division, provisional 2010 revenue was up 35% compared to the prior year.The Porous Technologies unit saw revenue growth of 13% (14% at constant exchange rates) while the Coated & Security Products division grew sales by 5%.The Filter Products division let the side down a bit, with revenue down 1% compared to the previous year (down 4% at constant exchange rates).