The company policy is to produce machine that can full fill the real need of farmers, which vary from place to place. Therefore, the company had established subsidiary factories to produce rice thresher in other intensive rice growing areas. A factory (currently known as Kaset Phattana Industry Co., Ltd.) was established at Phitsanulok in 1980 and another factory (currently known as Khon Kaen Agricultural Development) at Khon Kaen Province in 1986. Based on the experience in thresher, Kaset Phattana has started the development of rice combine harvester in 1988 to respond to the farmers' growing demands. After two years of the development project, the first trial batch was sold to customer in 1991, with close supervision by AED's and our staffs.