HAMMER MILL, SPLITER, SILO, MIXER, CONVEYOR SYS.Since its establishment in 1978, Dong Ah Development Industry has taken only one way of industrial machinery. The items which have been developed and applied to the industrial fields continue to be upgraded according to the needs of customers, making contribution in reducing sharply the manufacturing cost at the manufacturing fields. Our main businesses involve manufacturing & installing machinery and technical services in the field of alcohols, milling and feeds.