If you wish to export to Russia, Belarus or Kazakhstan most likely the products are subject to mandatory certification via either EAC certificate or EAC Declaration
EAC (CUTR) CERTIFICATION OF CONFORMITY
EAC or EurAsian Conformity is the term used to indicate compliance in the EurAsian Economic Union (EEU) that consists of Russia, Belarus, Kazakhstan, Armenia and Kyrgyzstan. TRCU (CUTR) Aims for single duty customs tariff and single economic space throughout its member states eliminating each national (regional) GOST certificates for exporters, and exempted custom taxes within the union. EAC mark on Product demonstrates its compliance to the Customs Union. Products not yet been included in unified TRCU lists may still need GOST certificates.