The fixtures are made with characteristics of thermal insulation, of water, air and wind sealing higher than those determined by "traditional" fixtures and in line with the requirements of the European standards for the windows and doors industry (Dir 2002 / 91/CE) and with the related national measures (Legislative Decree n. 192/2005 and n.311/2006). All products have a performance certification, issued by accrediting institutions.

CE mark certifies the compliance of a product  to the requisites of UE directives. QUEMME has all the requirements which allowed it to be awarded with CE mark. The company has carried out the ITT (Initial Type-testing) on its doors and windows, in which the production was subject to tests provided for by the law. In fact, every test attests the classification class of windows and doors based on performance tables defined by the relative standards. The company’s quality system is certified according to the UNI EN ISO 14.000 standard and UNI EN ISO 9001 standard.