Visitors at the sites

Westlake Vinnolit is part of the Westlake Group, has its headquarters in Ismaning near Munich and operates four other production sites in Germany.

Our sites

Headquarters in Ismaning

Ismaning is the administrative headquarters with around 100 employees.


Gendorf site

Westlake Vinnolit makes PVC and caustic soda at its Gendorf site. The operations are part of the Gendorf chemical park. Research and development is also based here.

Burghausen site

The Westlake Vinnolit operations for manufacturing PVC are located on the site of the Burghausen plant of Wacker Chemie AG. Burghausen is also home to Westlake Vinnolit application technology.

Cologne site

Westlake Vinnolit’s PVC operations are located on the Cologne-Merkenich chemical park.

Knapsack site

In Knapsack the Westlake Vinnolit operations are integrated into the Knapsack chemical park. Suspension PVC and caustic soda are made here.

Information on Corona

The safety and health of our employees, customers and partners, as well as the safe continuity of our business operations even under COVID-19 conditions, have the highest priority. Our hygiene and safety measures are determined depending on the current risk situation.

Before visiting your Westlake Vinnolit contact person, please inform yourself about the currently valid measures at the respective site.