German companies in China have grown more optimistic about the country’s economic outlook, even as the Iran war and persistent trade tensions continue to weigh on their operations, according to the German Chamber of Commerce in China. In a survey released on Tuesday, the chamber found that 37 per cent of respondents expected China’s economy to improve over the next six months. That was up 22 percentage points from last year, with only 17 per cent anticipating a deterioration – a sharp reversal..