Franz Dürholdt gains certification

Franz Dürholdt GmbH & Co. KG Armatturenfabrik (Wuppertal, Germany), manufacturer of pinch valves, hose-diaphragm valves and diaphragm valves as well as other globe and control valves, has been certified by the TÜV North Rhineland to DIN EN 9002 after the installation of a quality control system.

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