May312021News In a successfully completed recertification audit, TÜV Rheinland provided evidence that the requirements of ISO 9001: 2015 were met. The issuance of the certificate was confirmed for a further three years. Click to download the certificate Author: demigadmin Post navigationNextNext post:Business report from Chamber of Commerce Siegen April 2021Related PostsBusiness report from Chamber of Commerce Siegen April 202116. April 2021New Management1. January 2021DE-VX 5115 with new operator interface25. February 2020HK 2019 Cologne17. January 2020