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Latest update: 30/05/2017 17:59:27


Our company provides ultra-precision processing technology that supports optical telecommunications networks. 

Our company was the first in Japan to manufacture watch jewels. We then began to make optical communications connecting components as well as semiconductor- and medical-related parts through the grinding and polishing technologies we gained from watch jewel production. Our main products are ferrules, and we handle all the manufacturing processing entirely in-house from ceramics molding to grinding, polishing, quality assurance, and logistics. Our other lines of business include machining small-diameter parts that make use of ceramics, rubies, sapphires, and so on. These products are shipped to major electrical cable manufacturers and telecommunications device manufacturers in Japan and overseas locations such as North America, Europe, and Asia. 


Other presentation

[Company strength]
Our operations are based on grinding and polishing technologies gained in the production of watch bearing jewels, so our company particularly excels at processing fragile materials. We possess comprehensive technologies for ceramics production, ranging from material compounding to molding and machining. Our strengths include being an agile, flexible company, and having the ability to make technical suggestions. 

[Business description]
Our company is a 100% subsidiary of Adamant. We manufacture optical telecommunications connection parts and semiconductor- and medical-related parts as a manufacturing division for our parent company. We focus on ferrules, and we conduct all the manufacturing processes in-house from ceramics molding to grinding, polishing, quality assurance, and distribution. In addition to ferrules we also excel at manufacturing small-diameter products using ceramics, rubies, sapphires, and super-hard materials. We handle high-mix low-volume production of wire bonding capillaries, wedges, and dispenser nozzles.

Optical telecommunications device manufacturing; electronics applied device, semiconductor equipment, and related part manufacturing

[Strength of products/technologies]
Our main products are ferrules. These are zirconia parts with an outer diameter of 2.5 mm, 10.5 mm in length, and 0.125 mm in inner diameter. These ferrules are used to connect optical fibers, so even minute misalignment affects the coupling efficiency. This is why the required precision level for ferrules is within ±0.5 µ for the outer diameter, and ±0.5 µ for the inner diameter. We manufacture more than 10 million units of such products per month, in addition to production equipment that is entirely built in-house. 

[Representative's message]
Our company has been dedicated to the production of ultra-precision products through our original production technologies and equipment in the optical telecommunications field. We provide finished products, module units, assembly, or other forms of products and services regarding ferrules and sleeves in the manner required by our customers. We will continue to make use of our original cutting, grinding, and polishing technologies as a good partner for our customers, and work with them to develop globally top-class products. We will further enhance these technologies with the aim of developing new markets. 

[Company structure for market development/overseas expansion]
For domestic Japanese markets: We will apply our original production technologies and equipment to provide ferrules and sleeves in various forms as required by our customers. This includes raw materials, finished goods, connectors, and module units. 
For overseas markets: We can make use of our own overseas production sites (Shanghai, Thailand) in addition to the Adamant Group’s overseas sites (US and Germany) to respond to needs in other countries.

[Market share/Ranking]
We have a 50% market share in Japan, and 30% overseas. 

[Awards and media coverage]


ISO 9001; ISO 13485; ISO 14001; Strategic Core Technology Advancement Program approval.

[Main Clients / Business History (domestic)]
Our products are sold through Adamant, and mostly to electrical cable manufacturers such as Sumitomo Electric Industries Group, Furukawa Electric, and Fujikura. They are also sold to telecommunications device manufacturers including Fujitsu Group and NTT Group. 

[Main Clients / Business History (overseas)]
Our products are sold through Adamant. Around 50% of our sales volume comes from overseas telecommunications device manufacturers in North America, Europe, and Asia. 

This company is recommended by the following support organizations.

Tohoku Head Office, SMRJ

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