Established in 1976 with oil pumps as the main focus, A-Ryung succeeded in localizing coolant pumps and oil pumps for machine tools and industrial machines, which were all imported, for the first time in Korea. Starting with ISO-9001 acquisition in 1999 and CSA certification in 2000, A-ryung has acquired international certification marks such as KECR, KAB, CE, and NRTL. As an oil pump specialized company currently exporting to more than 20 countries, its technology is highly recognized around the world.