In 2009 engcon introduced a rotating brush series for excavators which soon became a favourite with a great many contractors especially those who work with excavators in city environments and railway contractors who sweep tracks and points

Can you repeat this sentence, but add in punctuation?
In 2009, engcon introduced a rotating brush series for excavators which soon became a favourite with a great many contractors, especially those who work with excavators in city environments and railway contractors who sweep tracks and points.