The company dates back to the 19th century (1827) when the Ahlmann family established a foundry in Büdelsdorf.
In 1946, ACO was founded by Josef-Severin Ahlmann.
Today, the group deals with a variety of products in the infrastructure and building sectors and has centers all over the world
Over the years, many lids manufacturers have been acquired:
2003 Compasso by ACO Italy Click for manufacturer's details
2019: MUFLE Click for manufacturer's details