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Our constant and excellent quality in all areas can be attributed to our quality management system which was certified in accordance with DIN EN ISO 9002 in 1997. Most products in our range are subjected to exceptionally high continuous stresses. 

There fore, materials processed by us must undergo a long series of tests.

WISTRA quality documentation

As a manufacturer, we can also issue the respectively required documentation. However, to do so, please state which documents you require during the offer phase, but at the latest upon order placement.

Depending on the documentation you require, we will inform you about the respective costs.

We can offer you the following documentation options:

  • WISTRA Factory Certificate 2.1 in acc. with DIN EN 10204:2004
  • WISTRA Factory Certificate 2.2 in acc. with DIN EN 10204:2004
  • WISTRA Manufacturer's Declaration COC
  • Approval Test Certificate 3.1 in acc. with DIN EN 10204:2004
  • WISTRA quality documentation

Together with external testing organisations

  • Approval Test Certificate 3.2 in acc. with DIN EN 10204:2004

Many products have already been GS or DEKRA certified.

You can download all important information