Polymelt joined the Wietersdorf as early as 1999. Three years on, Poloplast purchased 75% of the then Polymelt (plastics technologies) who, in 2003, was renamed Poloplast GmbH. The remaining 25% were bought in the following two years. This meant that in 2005 Poloplast Germany became a 100% subsidiary of Poloplast GmbH & Co KG, Leonding or Poloplast Austria, for short. However, it should not remain unmentioned here that the roots of Polymelt can be traced back to 1968, the core competence being hot and cold water pipe systems as well as under floor heating elements.