Engineering firm Keller said it has seen no significant change in its trading or outlook since its interim management statement five weeks ago and that expected results for the full year are still within the range of market expectations.Last month, the firm said that, while it was seeing a shift toward more publicly-financed projects, it was experiencing little sign of any benefit from the fiscal stimulus measures implemented by various governments. It said it was seeing tighter margins in the US, a mixed performance in continental Europe, the Middle East and Africa and a strong order book in Eastern Europe, though with some projects experiencing delays.Elsewhere in Europe trading has held up 'fairly well', the company said, adding that the Australian business has performed well but in the UK further downsizing has been necessary as the housing market remains in the doldrums.