This certificate (No.12016-2003) allows efficient organization and increasingly advanced design techniques to improve product quality and optimise production processes through the use of certified raw materials and certified suppliers in accordance with the standards required by the quality system carried out by continuously updated qualified manpower. Parfer Siti is also a member of professional associations such as ASSOLOMBARDA, Milan and COMPAGNIA DELLE OPERE, Bergamo. ND (non destructive) checks are carried out directly by Parfer Siti staff with the level II qualification complying with UNI EN 473 issued by CIC-PND. The welding process (WPR-PQR) is performed by qualified personnel certified by BUREAU-VERITAS.