At ET "Frenski – Hristo Petkov", the Quality Management System and Environmental Management System have been implemented and operational since 2007 in accordance with the standards ISO 9001 ISO 9001
Quality management standard. Ensures consistency and continuous improvement of products/services. and ISO 14001 ISO 14001
Environmental management standard. Aims to reduce environmental impact. . In 2013, the standard ISO/TS 16949 ISO/TS 16949
Quality management standard for the automotive industry. Requires high reliability and defect prevention. was also implemented.