All company products are certified in accordance with international standards and meets all international requirements and specifications.

ISO 9001, ISO 14001 ENG and OHSAS 18001 Certifications are a must features for major European companies. Each standard defines the specific area, which all together form a high degree of social responsibility.

Improving the products quality is built on defects prevention, as well as on rejection of defective components before entering the production process, also on an identifying and eliminating errors in the early stages of the production cycle.

Improvements in organizational process are achieved through continuous development of skills, raising competence and sense of responsibility of each employee, maintaining the level of production culture.

Also, TET ESTEL pays great attention to environmental issues. In product design and production process we strictly use environmentally friendly materials and technologies only.