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In recent years, ZVD has with the establishment and implementation of a quality system that meets the criteria of standards SIST ISO 9001, SIST EN ISO/IEC 17025, SIST EN ISO/IEC 17020 in all test laboratories and the inspection body, experienced a significant improvement with regard to quality in the area of testing and inspections.

The system is continuously being maintained and improved with the aim of achieving set indicators of quality, efficiency and success in business operations.