 Perma-Fix Environmental Services Inc NASDAQ:PESI FRA:PFX1 saw its revenue grow by 28 in its fourth quarter 2020 and 44 over the 2020 financial year, thanks to a strong Services Segment, according to its latest results released Monday. Revenue during 4Q 2020 was 28.3 million versus 22.1 million for the same period last year, while sales from the Services Segment increased by 10.8 million to 22.6 million from 11.8 million for the same period in 2019. 