Project of building of QMS started even in the year 1992, and process of building was being realized in years 1998. Implementation and approval were carried out at the end of the year 2001. An external certification audit was done by the certification auditing company ITQ in Jun 2002 and it was certified that the reguirements specified in the standard EN STN ISO 9001: 2001 had been met. QMS was maintained and evaluated regularly in control audits once a year simultaneously with the carried out internal audits. Last certification by auditing company ITQ have been made in July 2011 and issued certificate is valid till August 2014.