BRJ-1400 Transformer foil winding machine BRJ-1400Transformer foil winding machine Overview: The foil coil is made of copper foil or aluminum foil of different thicknesses as the conductor, the wide-band insulating material as the interlayer insulation, and the narrow ribbon insulating material as the end insulation. This machine is an essential equipment for the production of such electrical product parts. summeryFo