At the beginning of the nineties the second generation of Holtmann gradually took over the management of the Langenhagener business.
Since 1991 industrial engineer Claus Holtmann and business administration major Juergen Holtmann have acted as managing directors.
This decade was shaped by challenges of evermore interesting construction assignments. Within a construction time of only three months the Info-Box at the Potsdamer Platz - Europe’s biggest construction site - was created under the decisive participation of Holtmann. Other highlights of this decade were the exhibition booths of the German Telekom, which have constantly become more demanding.

1950s | 1960s | 1970s | 1980s | 1990s | 2000 - Expo year | 2000s | today