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1925. 05.
  Establish to SAN-EI SHOTEN in Otaru-city Hokkaido as the dealer of the mining machinery.
1934. 04.
  Named SAN-EI SHOTEN Co,.Ltd and establish as annex to SAN-EI SEIKI SEISAKUSHO for the manufacturer of the Air Motor, Air Winch, Rock drill.
1938. 10.
  Move head office to Tokyo city, and start branch factory and branch office in Korea and North China.
1942. 04.
  Designated by government as a munitions factory to produce Semi diesel Engine, Aircraft Parts etc.
1946. 04.
  Designated by the Ministry of Commerce and Industry as a mining machinery manufacturer.
1954. 10.
  Move head office to Otaru-city and start Tokyo office and Fukuoka branch.
1961. 06.
  Established Fukushima factory in Kohri-cho Date-gun Fukushima to increase the production of the Air Motor.
1963. 10.
  Start Osaka branch and renamed Fukushima factory as KOHRI SEIKI SEISAKUSHO Co.,Ltd.
1967. 04.
  Start manufacturing of Hydraulic Motor.
1975. 04.
  Rename SAN-EI SEIKI SEISAKUSHO Co.,Ltd. to OTARU SEISAKUSHO Co.,Ltd. and to produce the other field's goods.
1975. 05.
  Rename KOHRI SEIKI SEISAKUSHO Co.,Ltd. to SAN-EI SEIKI SEISAKUHO Co.,Ltd. and succeed to manufacturing.
1976. 01.
  Obtain the Permission of Crane and Hoist Manufacturing.
1984. 01.
  Increase the equipment investment to \200,000,000. by purchasing the machining centers.
1989. 02.
  Inaugurate Mrs. Etsuko Yamamoto as the president.
1992. 03.
  Start manufacturing of Air Balancer.
1998. 05.
  Increase the capital to \50,000,000.
1998. 09.
  Move Tokyo office from Nihonbashi to Asakusabashi.
2002. 08.
  Open Seoul Office as a trial operation
2003. 11.
  Established Korea SAN-EI Co., Ltd.
2007. 08.
  Change to KS Corporation


(152-050) # 494-8 Kuro-Dong Kuro-Gu Seoul Korea
TEL : 82-2-864-3144 / FAX : 82-2-864-3521
(Reg. No. 113-81-87772) Copyright (C) 2003 San-ei. All rights resered.