LICENSE FOR THE CONSTRUCTION OF EXTERNAL THERMAL INSULATING CONTACT SYSTEMS
(Issued by Technický a skúšobný ústav stavebný, n.o.)
CERTIFICATE STN EN ISO 9001:2016
(TUV SUD Slovakia s.r.o.)
CERTIFICATE STN ISO 14001:2016
(TUV SUD Slovakia s.r.o.)
CERTIFICATE STN 45001:2018
(TUV SUD Slovakia s.r.o.)
Environmental statement of DÚHA_a.s.
Environmental Management and Audit Scheme
(Slovak Environment Agency)