October 1940 Kazuto Mukaiyama establishes Koa Kogyo in Tokyo to start the manufacturing of fixed resistors. December 1941 The company opens Ina plant (at the location of the present head office) in Ina, Nagano to expand its manufacturing capacity. May 1947 The company becomes a joint-stock corporation. December 1950 The company changes its name to Koa Denko Co., Ltd. June 1955 The company becomes a JIS (Japanese Industrial Standards) authorized manufacturer. December 1961 The company lists its stock on the Second Section of the Nagoya Stock Exchange. November 1967 DAH HSING ELECTRIC CO., LTD is established in Taiwan. March 1974 KOA DENKO (MALAYSIA) BERHAD is established in Malaysia. December 1977 Koichi Mukaiyama is named as President of Koa Denko Co., Ltd. April 1980 KOA SPEER ELECTRONICS, INC. is established in the United States. February 1981 KOA DENKO SPTE, LTD. is established in Singapore. January 1984 PINE PARK (East Wing and HELLO Wing) is opened. April 1984 KOA ELECTRONICS CO., LTD. is established. September 1984 Koa Denko Co., Ltd. lists its stock on the First Section of the Tokyo Stock Exchange and the Nagoya Stock Exchange. October 1984 KASHIMA KOA DENKO is established. April 1985 Koa Denko Co., Ltd. changes its name to KOA CORPORATION. April 1986 KOA SEFIX is established. August 1986 KOA KAOHSIUNG CORPORATION is established in Taiwan. March 1987 The KPS campaign is inaugurated. June 1989 KOA T&T is established. November 1991 SHANGHAI KOA ELECTRONICS CO., LTD. is established. February 1992 TAKUMI NO SATO is opened. August 1993 MUSASHINO KOBO is opened. June 1994 KOA ELECTRONICS (H.K.) LIMITED is established. December 1994 KOA CORPORATION obtains ISO 9002 certification for quality control. April 1995 KOA EUROPE GMBH is established in Germany. March 1996 KOA CORPORATION obtains ISO 9001 certification for quality control. March 1997 SHANGHAI KOA ELECTRONICS TRADING CO., LTD. is established. April 1998 KOA CORPORATION obtains ISO 14001 certification for environmental management. July 1998 KOA CORPORATION obtains QS 9000 certification for quality control. December 1998 EARTH WING is added to PINE PARK. April 2000 K-TECH DEVICES CORPORATION is established. June 2000 KOA ELECTRONICS (TAICANG) CO., LTD. is established in China. August 2001 TAMA ELECTRIC CO.,LTD. joined KOA Group as a subsidiary through exchange of shares. October 2001 SHANGHAI REPRESENTATIVE OFFICE was established in SHANGHAI,China. February 2002 �J�r��`��v Wing�J was opened as a welfare facility of employees. December 2002 KOA SEFIX CORPORATION was merged into KOA as Takagi and Matsukawa factories.