A.L.M.T. Corp.

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History, Trust, Performance

Who is A.L.M.T. Corp.?

A.L.M.T. Corp. is a company that was established in 2000 following the merger of “Osaka Diamond Industrial Co., Ltd.” which started its business in 1933 as a diamond precise tool manufacturer, and “Tokyo Tungsten Co., Ltd.” which started its business in 1939 as a refiner, raw material manufacturer and processor of metallic materials with high melting points, such as tungsten and molybdenum.
In 2004, the company became a wholly owned subsidiary of Sumitomo Electric Industries, Ltd.
In 2007, the company got ONE-ALLIED and has been steadily growing and continues to grow even now.


Who is “Tokyo Tungsten Co., Ltd.” ?

“Tokyo Tungsten Co., Ltd.” was established in 1939 in Katsushika Ward in Tokyo, and its main business was the sale of powdered and processed tungsten and molybdenum.
The company had several factories all over Japan including those in Katsushika Ward, Toyama and Yamagata prefectures.
Even now, the company name has changed. We are supporting Japanese manufacturing with these factories


Aoto Plant of Prewar Tokyo Tungsten

Tungsten Carbide Powder
Tungsten Ores
(Basic material of our various kinds of tungsten powder)

Who is "Osaka Diamond Industrial Co., Ltd."?

“Osaka Diamond Industrial” previously named Diamond Kenma Co., Ltd. was established in Nishiyodogawa Ward in Osaka in 1933.
At that time, the company had gradually increased its sales of diamond. And now, the company has become an important part of A.L.M.T. Corp to make a great contribution to the progress of the industry in society in many ways.


Head Office of Osaka Diamond Industrial Co., Ltd.


Operation in die plant


TRUMEX grinding wheel

Catalog of cutting blades for concrete, with the SUMITOMO logo and the words “By Japan’s First cemented carbide bond”