The European Union Chamber of Commerce in China on Wednesday expressed concern over a recent series of antitrust investigations, saying China was using strong-arm tactics and appeared to be unfairly targeting foreign firms. An array of industries have been coming under the spotlight as China intensifies efforts to bring companies into compliance with an anti-monopoly law enacted in 2008. The auto sector has been under particular scrutiny, and the National Development and Reform Commission (NDRC), Chinas state planner, has been investigating it amid accusations by state media that global car makers are overcharging consumers. The European Chamber said that while effective enforcement of the anti-monopoly law would help develop a healthy market economy in China, it was concerned about the way investigations were being carried out.