Precision jewel Parts

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         2021/05/24 We were featured on the cover of the journal Diamond and Related Materials.
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         2021/05/07 Diamond and Microridge Stylus
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          4 Channel Record and Shibata Stylus
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          Stereophonic Record and Elliptical Stylus
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          Progress of LP Record and Record Stylus
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          Stylus in the Age of SP
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          Principal of Cylinder Phonograph, Sound Groove and Stylus Tip
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          History of Stylus Tip and Gramophone Record
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         2021/05/06 What are Diamonds？: Synthesis of Diamonds
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          What are Diamonds?
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         2021/04/26 Crystal of Jewel
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          Color of Jewel