German engineers Martin Holzheid (front) and Lucas Rebhan work at the assembly site of Taurus milling machine in Shanghai in this file photo. Preliminary assembly of the milling machine, which will be the largest exhibit to be on show at China’s upcoming import expo, was finished Monday. The exhibit is expected to cover 200 square meters of exhibiting space during the expo, which is scheduled to be held in Shanghai on Nov. 5-10. Xinhua