Gurugram: The Enforcement Directorate (ED) has provisionally attached assets worth Rs 557.49 crore belonging to the Amtek Group, which includes companies like M/s Amtek Auto Limited, M/s ARG Limited, M/s ACIL Limited, M/s Metalyst Forging Limited, and M/s Castex Technologies Limited. This action is part of an investigation into Arvind Dham, the group’s promoter, and.