ABOUT US
| 2020 | Recertification by the TÜV Rheinland according to the new ISO 9001:2015 |
| 2018 | 20th company anniversary |
| 2017 | Recertification by the TÜV Rheinland according to the new ISO 9001:2015 |
| 2014 | As part of quality management, our company was certified by the TÜV Rheinland according to ISO 9001:2008 |
| 2013 | Relocation to Hamminkeln, Vennstraße, into today’s company building. Ideal working conditions were established for the successively growing and competent team, profiting from an air-conditioned office wing, block-type thermal power station, photovoltaic installations and a 400 m² high bay warehouse |
| 2009 | Relocation to Rees, Rauhe Straße, including expanded storage room and modern offices |
| 2005 | Conversion of the sole proprietorship to PTH Prüftechnischer Handel GmbH |
| 1998 | Company foundation |
