China's aluminium foil makers plan challenge to US dumping duties

China's top aluminium foil producers are preparing to launch a legal defence challenging a preliminary U.S. ruling on Wednesday to impose hefty penalties on imports from the world's top producers, two sources familiar with the matter said.

Loften Aluminum, China's top foil exporter to the United States, is joining 11 other companies to fight the ruling, the first such case since the inauguration of U.S. President Donald Trump, an official at the company said, speaking on condition of anonymity.

The China Nonferrous Metals Industry Association (CNIA) is leading the charge on the case, an official at the association said.