All raw materials entering the plant are checked to made sure they meet the factory standards. During manufacturing, both on-line and spot-check sampling is carried out, so as to keep the percentage of error next to zero. The finished products, the machines that Goldoni is about to put on the market, are individually checked and carefully tested both as regards their components and their groups, so that the customer that purchases a Goldoni motor-cultivator or tractor can be sure he has bought a machine with an extra plus in quality.