Product certification is a process of assessing the conformity of a product with the requirements of technical regulations and technical specifications. Technical and Test Institute for Construction Prague (TZÚS Praha, s.p.) participates in this process as an independent entity. We offer certification of both specified and non-specified products. Specified products are products that may pose an increased threat to the legitimate interest, and their list is part of the government regulations related to Act No. 22/1997 Coll., On Technical Requirements for Products, as amended, or they are covered by European harmonized technical specifications. Specified products are certified to meet the statutory requirements, based on the decision of the Czech Office for Standards, Metrology and Testing. Technical and Test Institute for Construction Prague acts as Authorized Body 204 and Notified Body 1020, in accordance with the authorizations granted by the Czech Office for Standards, Metrology and Testing, and as Notified Body 1020, in accordance with the authorization also issued by the Czech Office for Standards, Metrology and Testing. The authorization of Technical and Test Institute for Construction Prague as a Technical Assessment Body has been issued by the Ministry of Industry and Trade of the Czech Republic. Furthermore, we offer voluntary certification for non-specified products; this certification can also be obtained for specified products upon application.