Private Enterprise Industrial Company “Agrotech” is rapidly developing company that is successfully working on the market of agricultural equipment since July 2003. Produced equipment is proprietary, and its function, industrial sample, useful model, and the main working part are protected by three Ukrainian patents, as well as three patents in Russia, EU-member states, North and South America. International PCT application was submitted, which consolidated priority of this invention in each of its contracting states. The company is the exclusive manufacturer of this type of grain cleaning equipment, an innovation that is fundamentally different in its function from the existing traditional systems for cleaning and calibration of crop and other loose materials.