The future of the company, the protection of jobs, the satisfaction of our customers, suppliers and owners and other interested parties can only be achieved through a conscious approach of all employees in terms of quality, the environment and energy. We have developed an integrated quality management system and have summarized the requirements of the standards DIN EN ISO-9001:2008, DIN EN ISO 14001:2009 and DIN EN ISO-50001:2011 in a management manual.


In 2000, GTD became certified for the first time, according to DIN EN ISO-9001:1994 by the International Certification Body, NIS-Zert. Certification was renewed in 2003 (status 2000), 2007, 2010, 2013, 2016 (status 2008) and 2018 (certification by the BSi, status 2015)


In 2003, GTD successfully implemented the requirements of environmental standard DIN EN ISO-14001 and achieved full accreditation. We thus want to emphasize that we are striving for an eco-friendly production facility on a continuous basis. The certification was renewed continously and was last renewed in 2018 (certification by the BSi, status 2015)

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Since the end of 2016 GTD is successfully certified according to the energy management system DIN EN ISO-50001:2011. Our goal is besides limiting the resources of energy, water, air and soil also the constant reduction of risks associated with environmental and energetically resources.

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