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Universal Welding Authorization
Firm Prestar s.r.o. (Ltd.) possesses a certificate of "Universal Welding Authorization" from SLV Berlin, since 1995
Quality Management System EN ISO 9001 : 2008
By end of 2001, a Quality Assurance System as per EN ISO 9001 was introduced and certification was received by the Prestar, s.r.o. (Ltd) : in 2000, by the certification authority ITI TÜV.
Inspekční certifikát svařování
Firma PRESTAR s.r.o je certifikována pro svařování vysokopevnostních materiálů dle normy ČSN EN ISO 15614-1 pro všechny tloušťky materiálu.

