Corporate Information

History

Tokyo Tungsten Co., Ltd. Year Osaka Diamond Industrial Co., Ltd.
  1933 Established Diamond Kenma Co., Ltd. in Nishi-Yodogawa-Ku, Osaka City and began manufacturing and marketing diamond tools.
  1937 Entered into a capital and technical partnership with Sumitomo Electric Industries, Ltd.
Established Katsushika Seiren Co., Ltd (renamed to “Tokyo Tungsten Co., Ltd.” in December the same year) and began to produce tungsten powders. 1939  
  1944 Transferred the Plant to Sakai City. Changed its company name to “Osaka Diamond Industrial Co., Ltd.”
Opened Sakata Plant in Sakata City, Yamagata Prefecture. 1945  
Sumitomo Electric Industries Co., Ltd. made capital investment in the company. 1952  
Opened Toyama Plant (currently Toyama Works) in Toyama City, Toyama Prefecture. 1958  
  1963 Registered as a listed company in the second section of the Osaka Securities Exchange.
Registered as a listed company in the second section of the Tokyo Stock Exchange. Detached Sakata Plant as Tohoku Mineral Industries Co., Ltd. 1964  
  1974 Opened Shizuoka Works in Fujieda City, Shizuoka Prefecture.
  1980 Entered into a capital and technical partnership with Watanabe Diamond Industries Co., Ltd. (currently Awaji Diamond Industrial Co., Ltd.).
  1988 Opened Harima Works in Kato-Gun, Hyogo Prefecture.
Made capital investment in Chyi Meei Precison Industry Co., Ltd. in Taiwan.
  1989 Established Osaka Diamond Industries (Singapore) PTE., Ltd. in Singapore.

Watanabe Diamond Industries Co., Ltd. changed its name to Awaji Diamond Industrial Co., Ltd.
Sumitomo Electric Industries Co., Ltd. made capital investment in Tohoku Mineral Industries Co., Ltd. The company name was changed to Advanced Material Inc. (currently A.L.M.T. TECH Inc.) 1991 Established Osaka Diamond Industries (Thailand) Co., Ltd. in Thailand.
Established Sakata Tokyo Tungsten Co., Ltd. (currently A.L.M.T. TECH Inc.) in Sakata City, Yamagata Prefecture. 1994  
Transferred Tokyo Works’ facilities to Sakata and Toyama Plants and closed Tokyo Works. 1995  
Year A.L.M.T. Corp.
2000 Tokyo Tungsten Co., Ltd. and Osaka Diamond Industrial Co., Ltd. merged to form A.L.M.T. Corp. on October 1.
Advanced Material Inc. and Sakata Tokyo Tungsten Co., Ltd. merged to establish A.L.M.T. TECH Inc.
2002 Opened Ono Works in Ono City, Hyogo Prefecture.
Established Henan ALMT Whirlwind Diamond Co., Ltd in China.
2003 Partly divided and took over A.L.M.T. TECH Inc. and established newly independent subsidiaries, A.L.M.T. TUNGSTEN Corp. and A.L.M.T. DIAMOND Corp.
Transferred the drawing die business of A.L.M.T. Corp to Awaji Diamond Industrial Co., Ltd.
Transferred Osaka Works’ facilities to Harima and closed the Works.
Functional parts business transferred from Sumitomo Electric Industries, Ltd.
2004 A.L.M.T. Corp. became a wholly owned subsidiary of Sumitomo Electric Industries Co. Ltd. (as of July 30, 2004) and be delisted from the Second Section of the Tokyo Stock Exchange and Osaka Securities Exchange.
Established Henan A.L.M.T. Whirlwind Diamond Wheel Co., Ltd., A.L.M.T. Diamond Dies (SUZHOU) Co., Ltd. and Chengdu Liang Hong Molybdenum Co., Ltd. in China.
2005 Changed the company name of Osaka Diamond Industries (Singapore) PTE., Ltd. to A.L.M.T. Asia Pacific Pte. Ltd.
Changed the company name of Osaka Diamond Industries (Thailand) Co., Ltd. to A.L.M.T. (Thailand) Co., Ltd.
2007 Transferred Ono Works’ facilities to Harima and closed the Works.
2011 Opened Korat Plant of A.L.M.T. (Thailand) Co., Ltd.