Give Elementfabrik A/S, DS Elcobyg A/S, Dan-Element A/S, A/S Midtjydsk Betonvare- og Elementfabrik, Fårup Betonindustri A/S, Leth Beton A/S, Ambercon A/S, Thisted-Fjerritslev Cementvarefabrik A/S, A/S Boligbeton, Spæncom A/S, Gandrup Element A/S, RC Beton A/S, CRH Concrete A/S, Heidelberg Materials Precast Denmark A/S (tidligere Contiga), PL Beton A/S, Industri Beton A/S.