UAB „Žvanga“ uses materials/products from Rautaruukki Corporation (Finland). The corporation steel sheets are available in 24 standard shades which enables to produce the roof of desired colour and suit the needs of the most sophisticated clientele.
UAB „Žvanga“ provides 10 year satisfaction guaranty for colour coated steel sheets with PVDF, PURAL (PU), polyester matt (PEMA) coatings. Polyester (PE), plastisol (PVC) coatings get 5 year guaranty.
The products have ISO 9002 certificate.