2. Free, flexible and useful services: The QGAP provided many services to support the farmers on the QGAP cultivation program without any cost (FAO, 2003) same as 4C services. According to the FGD, all coffee farmers (10 farmers) mentioned that QGAP soil nutrients checking services that it took time for more than 10 to 12 months for checking results. On the other hand, they stated that 4C soil nutrients checking services took only 2 to 3 months. As a result, farmers could improve soil nutrients for their next cultivation because of 4C services. Also the 4C extension officers regularly visited (every 2 to 4 months) compared to the QGAP officers who visited the farmers only once a year. The close relationship between farmers and 4C extension services supported the 4C standard to increase the number of 4C members which accounted to more than 5,000 members within two years. Also, 92 farmers (71.9%) stated that they could increase their cultivation efficiency using 4C extension services which are provided for 4C farmers without any cost. In addition, all of them preferred the 4C services rather than QGAP services.