OTN places top priority on integrity, quality, working conditions and the environment. This is demonstrated by our code of conduct and ISO 9001 and SCC** (safety checklist for businesses) certifications. All OTN employees have completed the compulsory national and international basic training and satisfied training and certification requirements.

Management information is collected and analysed with respect to quality, working conditions and the environment using state-of-the-art techniques in every phase of the construction process. By means of this process, we continuously strive to improve our operations, thereby increasing the yield for our clients. Our aim is to provide high-quality services at all times and to continuously improve our business operations.