One of key problems of improvement of system of standardization is the greatest possible application of the international (regional) standards for implementation (confirmation) of compliance of production, services to the established requirements. In this regard harmonization with the international standards of three interstate standards directed on increase of efficiency and quality of carrying out certification of works (services) in the agrarian and industrial complex sphere is carried out: GOST "Diesels tractor and kombaynovy. Delivery in repair and release from repair. Specifications"; GOST "Tractors agricultural. Delivery in repair and release from repair. Specifications"; GOST "Combines self-propelled grain-harvesting and their assembly units. Delivery in repair and release from repair. Specifications".