The 4C unit set at least one station in every district. The coffee would be checked by inspectors at the buying station to calculate coffee prices.The farmers had their own member ID when dealing with the company. The inspectors tested the coffee quality weight moisture and taste at stations.This process took time 3 to 4 days after farmers contact to the buying station. Then $C unit quoted the price for each bag that depended on the quality of coffee 4C coffee 4C coffee was priced 3 to 5% higher than ordinary coffee by the 4C unit. Traceability system was controlled by the 4C. The farmers had to register and get the members' ID given from the company. The quality testing process took a long time for checking those coffee quality