In this respect it was quite obvious fur us to install and maintain a quality management system to control and supervise all the object and product related processes. Our management system is based on DIN EN ISO 9001. We comply with this standard, which we prove by means of a certificate issued by an independent certification body. Our QM system aims at continuously improving products, services, processes and structures. All the organisation units of the H. Stock GmbH & Co KG are integrated in this process. For this purpose it is essential that all the staff members of our company familiarise with the quality documentation and the embedded philosophy, that they maintain it and consider and apply the relevant valid principles and process instructions. Since experience has shown that continuous and sustainable improvements are only successful when all the involved persons help to cooperate and act correspondingly.