Sekiya family of Japan has a net worth of $7.4 billion. In 1937 Mitsuo Sekiya founded Disco Corporation in Hiroshima prefecture for produce vetrified grindstones.
Kazuma Sekiya is the current Chief Executive Officer for Disco. He is a grandson to the company’s founder.
Disco specializes in manufacturing equipment used for slicing semiconductors in rectangles and squares for use in cellphones.
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The company started making their own cutting and grinding machines in the 1970s. They use ultra-thin cutting wheels.
The ultra-thin resinoid abrasive wheel was the first to be developed in Japan. It has a thickness of between 0.13mm to 0.14 mm and was initially for cutting the slit in fountain pen nibs.
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