Wiring circuit board

A wiring circuit board comprising:

• a metal supporting board;
• a first metal thin film disposed on one surface of the metal supporting board in a thickness direction;
• an insulating layer disposed on one surface of the first metal thin film in the thickness direction and having a through hole penetrating in the thickness direction;
• a second metal thin film disposed on one surface of the insulating layer;
• and
• a conductive layer disposed on one surface of the second metal thin film,
• wherein, in the through hole, the first metal thin film and the second metal thin film are disposed between the metal supporting board and the conductive layer, the other surface of the first metal thin film is in contact with the one surface of the metal supporting board, the other surface of the second metal thin film is in contact with the one surface of the first metal thin film, and the other surface of the conductive layer is in contact with the one surface of the second metal thin film, and
• wherein, at least, a material of the first metal thin film is an alloy containing chromium.