On August 1, 1938, the 26-year-old plumber and installation master Karl Grumbach founded his workshop for plumbing, heating and plumbing in Wetzlar – Münchholzhausen.
On August 1, 1938, the 26-year-old plumber and installation master Karl Grumbach founded his workshop for plumbing, heating and plumbing in Wetzlar – Münchholzhausen.