Most "Irish" model cars are special versions of foreign vehicles in Irish liveries. For instance IDP (Irish Decal Products), a company based in Dublin, has specialized in models of Irish buses, vans, police cars and fire engines. In the 1990s, IDP released a range of vehicles as used in Ireland, based on castings made by Lledo from England and named "Shamrock Heritage Collection", after a national symbol of Ireland. Later several bigger models in 1/36th to 1/68th scale were introduced by IDP in the series "The Irish Model Collection". These models were made in China from the same moulds as the contemporary models by Richmond Toys. Furthermore, Corgi has produced models in special liveries in their "Road Service of Ireland" range, and there are several diecast models of Irish buses in 1/76th scale, made by EFE and Corgi.