If you want to maintain your health, then when choosing materials for construction, you need to look not only at their useful qualities and appearance. Particular attention should be paid to their safety for health, that is, environmental purity. The first thing to pay attention to is the presence of a particular building material from the sanitary and epidemiological conclusion. This certificate should indicate that the material has passed, all the necessary studies are fully consistent with sanitary standards and is safe for health. Before issuing such a certificate, research is necessarily conducted for the presence of toxic substances. This document can be demanded by a manufacturer or seller company. By the way, you know that there is a company that conducts clinical studies of various turnkey phases.
