>>964219DÜWAG/LHB TW6000.
They bought used trams to change most of another old type in the early 2000s. The first unit consisted of 76 trams (1500...1575). Later another unit arrived from Hague (8 trams which was really used there, and 8 which was't in service, even left in Hannover), with 4 extra ones to have enough spare parts for repairing and maintenance works. Later one of these 4 trams was also revived to be an operating one, and another unit of 10 arrived (these ones were manufactured by LHB and got the numbers 1600...1609).