Dansk Overflade Teknik A•S (DOT) was established in 2002 in a merger between Herning Galvanisering A/S, Dansk Overfladeteknik A/S, Fasterholt, FJ Varmforzinkning A/S, Ferritslev, FJ Varmforzinkning A/S, Køge, and later in 2003 with the takeover of Middelfart Galvanisering A/S.