History

1920

  • 1928 Establishment of Kawaguchi Rubber Works (Katsushika-ku, Tokyo)

1940

  • 1943 Incorporation of Kawaguchi Rubber Works Co., Ltd. (Katsushika-ku, Tokyo)
  • 1947 Successfully commenced manufacturing of Japan’s first vinyl chloride products
IMAGE

1950

  • 1950 Rebuilt factory to fully convert to vinyl chloride processing lines
  • 1952 Introduced first four calenders for vinyl chloride in Japan
  • 1959 Osaka Sales Office opened (currently Osaka Branch)
IMAGE

1960

  • 1960 Gamo plant established (Koshigaya-shi, Saitama)
  • 1961 Tokyo Sales Office opened (Chiyoda-ku, Tokyo)
  • 1962 Listed in the Second Section of the Tokyo Stock Exchange (Capital 153 million yen)
  • 1963 Central Research Facilities opened (Katsushita-ku, Tokyo)
  • 1968 Tsuchiura Plant (currently Tsuchiura Works) founded (Tsuchiura-shi, Ibaraki)
IMAGE

1970

  • 1970 Lonseal waterproofing adopted for Osaka World Expo Pavilion
  • 1972 Name changed to Lonseal Corporation
  • 1972 Construction material sales company LONSEAL INC. established in California,
    U.S.A. (currently consolidated subsidiary)
  • 1973 Osaka sales office becomes Osaka Branch
  • 1975 Main Plant (Katsushika-ku, Tokyo) relocated and merged with Tsuchiura Plant
IMAGE

1980

  • 1980 Okayama Plant established (Okayama Prefecture)
  • 1984 Gamo Plant relocated and merged with Tsuchiura Plant
  • 1985 Head Office Relocated (Chiyoda-ku, Tokyo)
  • 1988 To mark the 60th year of foundation, the CI catchphrase “Creating Beautiful Living Spaces with Science” was adopted
IMAGE

1990

  • 1990 New Headquarters Building Complete
    Head Office Relocated (Sumida-ku, Tokyo)
  • 1995 Okayama Plant relocated and merged with Tsuchiura Plant
  • 1996 Shares acquired in Japan Equipment Co., Ltd. (Lontechno Kinki Co., Ltd.)
  • 1996 The first company in the vinyl chloride manufacturing industry in Japan to acquire ISO9001
  • 1997 Shares acquired in Kogensha Co., Ltd. (Lontechno Tokyo Co., Ltd.)
  • 1998 Incorporation of Lon-S Co., Ltd.
IMAGE

2000

  • 2007 Acquisition of ISO14001 Certification
  • 2009 Lon-S Co., Ltd. dissolved
IMAGE

2010

  • 2010 Lontechno Tokyo Co, Ltd. merges with Lontechno Kinki Co., Ltd., Corporate
    name changed to Lontechno Co., Ltd. (currently consolidated subsidiary)
  • 2011 Construction material sales company Lonseal (Shanghai) Trading Company established in Shanghai, China (currently consolidated subsidiary)
IMAGE