New Delhi/Mumbai, May 19 -- India's top automotive companies have knocked on the doors of the commerce ministry over concerns that disruptions in the supply of rare earth magnets from China could potentially bring their production lines to a stop.

Representatives from the Society of Indian Automobile Manufacturers (SIAM) and the Automotive Component Manufacturers Association of India (ACMA) are set to meet officials at the commerce ministry on Monday afternoon to express their grievances, three industry executives aware of the matter said.

The representative had approached the Prime Minister's Office on Friday, two of the executives said, asking not to be identified because they are not authorised to speak to the media.

China controls ...