The 4C certificate adapted by farmers since 2010 became the choices for other farmers who want to improve coffee cultivation efficiency. Also they possibly improve coffee cultivation efficiency. Also they possibly wanted to approach specific coffee markets which prought up the high coffee price. It was not difficult for the farmers to adapt 4C standard on their practical farming (Ponte, 2002). The farmers (93.8%) mentioned that it was easy to sell their coffee with the certificate to the domestic market. In addition, 92 farmers (71.9%) could increase their cultivation efficiency using 4C extension serveices provided for 4C farmers without any cost.