The quality management system, according to the ISO 9001 standard has been introduced since 2004, the certification authority was the company TÜV Management Service.
Quality management system (ISO 9001)

Seven principles
– The primary focus of quality management is to meet customer requirements and to strive to exceed customer expectations.
– Leaders at all levels establish unity of purpose and direction and create conditions in which people are engaged in achieving the organisation’s quality objectives.
– Competent, empowered and engaged people at all levels throughout the organisation are essential to enhance its capability to create and deliver value.
– Consistent and predictable results are achieved more effectively and efficiently when activities are understood and managed as interrelated processes that function as a coherent system.
– Successful organisations have an ongoing focus on improvement.
– Decisions based on the analysis and evaluation of data and information are more likely to produce desired results.
– For sustained success, an organisation manages its relationships with interested parties, such as suppliers.