Asahi Diamond Industrial Europe, Leader in the world of diamond and cBN tool manufacturing

Leader in the manufacturing of diamond and cBN-based tools, we provide highly efficient solutions for a wide range of industries, including automotive, aerospace, electronics, and many others.

Qui est Asahi Diamond Industrial Europe ?

Asahi Diamond Industrial Europe: Your partner in diamond and cBN superabrasives

Our goal is to provide our customers with high-performance tools that can withstand the most challenging conditions and offer exceptional life-time. Leveraging our expertise in diamond and cBN tool manufacturing, we are able to offer customized solutions to meet the specific needs of each customer. At Asahi Diamond Industrial Europe, we prioritize quality, innovation, and customer service. We are proud to deliver superior-quality products at competitive prices. Our clients can rely on us for expert advice, technical support, and prompt delivery.

Meules Diamants - Asahi Diamond Industrial Europe

The history of Asahi Diamond Industrial Europe


Asahi is celebrating its 69th anniversary and has plans to construct a new factory.


60 years of existence

It is the celebration of the company's 60th anniversary and also marks the beginning of the 24th year at Asahi Diamond.


A subsidiary of a Japanese group

Formerly known as Triefus, the company adopts the name Asahi Diamond Industrial Europe, thus becoming a subsidiary of the Japanese group.


Arrival of Asahi Diamond

The Asahi Diamond group enters the capital of Triefus.


Development: New unit

The company in France is expanding and giving rise to the creation of a new production unit in Chartres.


A quest for development

This year, Triefus is undergoing renovations in Chartres to facilitate its development.


Name change

The company Triefus is undergoing a significant name change to become Asahi Diamond, a British family group.


Creation of a company

The history of Asahi Diamond Industrial Europe dates back to 1954 when a company named "Applications Industrielles du Diamant" was established in France.


Asahi Diamond Industrial Europe Key Figures


production sites in Chartres, France, and a commercial office.

16 Millions

A turnover amounting to 16 million euros.


employees present on French territory are distributed between the two factories and the French commercial office.

Fabrication d'outils conçus par Asahi Diamond Industrial Europ / Tools manufacturing

Asahi Diamond Industrial Europe, an essential partner for diamond and cBN tool applications


At Asahi Diamond Industrial Europe, the customer is in the heart of the project. Their feedback is taken into account during the design of various tools. Asahi Diamond Industrial Europe guarantees a high-quality and durable product over time to all of its clients.

Close to our customers

High-quality product

Customized development

The word from the President of Asahi Diamond Industrial Europe: Seinosuke TABATA

Président Seinosuke TABATA - Asahi Diamond Industrial Europe


As the CEO of Asahi Diamond Industrial Europe, it is with great honor and deep gratitude that I address you today. As an industry leader, I feel the duty and responsibility to share my vision and knowledge about our ever-evolving sector.

With a wide range of high-tech products, our superabrasive tools are perfectly suited for tasks requiring speed and precision. They are used in various industries, including transportation equipment, machinery manufacturing, optics, semiconductors, and road construction. Committed to ecological sustainability, we strive to manufacture tools that reduce energy consumption and waste production. Furthermore, through our global presence, we have chosen to be as close as possible to our customers and cater to all their needs.

In this rapidly changing world, we have adapted to provide effective solutions that meet our customers’ demands. Contributing to your projects and success is our priority. Therefore, we continue to embrace these changes and view them as opportunities rather than obstacles.

Technological advancements, artificial intelligence, and automation are redefining industry standards. By innovating, investing in research and development, and equipping our employees with skills for the future, we can maintain our competitiveness and thrive in this industrial landscape.

Human capital is the backbone of our industry. It is through our talented, dedicated, and passionate employees that we achieve remarkable breakthroughs. We continue to invest in their development, foster an inclusive and diverse environment, and promote a corporate culture based on ethics, integrity, and respect.

I am convinced that the industry we operate in has a promising future. By embracing change, fostering innovation, and placing human values at the core of our actions, we can continue to overcome challenges and seize opportunities.

I want to thank each and every one of you for your continued commitment to Asahi Diamond Industrial Europe. Together, we are prepared to shape a bright future for our industry, contributing to economic growth and the well-being of our stakeholders.

I wish you all a fruitful future.

Seinosuke TABATA

The history of Asahi Diamond Industrial Group


80 years of existence

Asahi Diamond Group celebrated its 80 years of expertise and know-how in the manufacturing of diamond and cBN tools. Since its establishment in Tokyo in 1937, the company has continuously grown and innovated to provide high-quality products that meet the needs of its customers.


Opening of factories - Sweden, Mexico & Malaysia

Asahi Diamond Industrial continues its international expansion with the opening of three new subsidiaries: Asahi Diamond Scandinavia, Asahi Diamond Mexico, and Asahi Diamond Malaysia.


Acquisition of Koremura

Acquisition of Koremura company in Japan: a new subsidiary is established.


Opening of a factory - Japan

Asahi Diamond has invested in the expansion of the Yamanashi, Tamagawa, and Mie factories, all of which are located in Japan.


Opening of factories - USA & China

Asahi Diamond Industrial expanded its international presence by creating two new subsidiaries, Asahi Diamond America and Asahi Diamond Shanghai, thereby strengthening its position in the American and Chinese markets. Additionally, Asahi Diamond Industrial acquired all the shares of Asahi Diamond Indonesia.


Opening of a factory - Thailand

Asahi Diamond Industrial strengthened its presence in Asia with the establishment of a permanent office in Thailand, providing more localized services to its customers in the region. Additionally, the company constructed new buildings for its Chiba Daini production site in Japan.


Opening of a factory - Japan

Ten years after its first opening, a second factory named Chiba Daini is established in Japan, in the Chiba region.


Acquisition of Triefus Australia

Asahi Diamond Industrial has acquired the shares of Triefus Australia, now known as Asahi Diamond Australia.


Opening of a factory - Japan

Opening of Chiba Tsurumai factory in Japan.


Acquisition of Triefus France

That year, Asahi Diamond Industrial inaugurated its second production unit in Mie, Japan, as well as the entry of the group into the capital of Triefus SA in France.


Leader in super abrasives

Asahi Diamond Industrial was listed on the first market of the Tokyo Stock Exchange, further strengthening its position as a leader in the manufacturing of high-quality diamond and cBN tools.


Opening of a factory - Japan

Opening of the Yamanashi factory in Japan.


Asahi Diamond Group listed on the Stock Exchange

Asahi Diamond Industrial was admitted to the second market of the Tokyo Stock Exchange, a significant recognition of the company's growth and financial strength.


Factory Opening in Taiwan

The group's expansion continued with the opening of the TDC factory in Taiwan, strengthening the international presence of Asahi Diamond Industrial and enabling better service to its customers in the Asia-Pacific region.


Factory Opening in Japan

A new factory, the Tamagawa factory, opens its doors, still in Japan.


The beginning

Asahi Diamond Industrial was founded in Tokyo, marking the beginning of its remarkable journey in the manufacturing of high-quality diamond and cBN tools.

The key figures of Asahi Diamond Industrial Group


in super abrasive in Japan.


of the world leaders.


production sites worldwide.


employees working alongside Asahi Diamond Group.

?? Millions

A turnover amounting to ?? million euros.

Tools - Asahi Diamond Industrial Europe

The word from the President of Asahi Diamond Industrial Group: Kazuki KATAOKA

Asahi Diamond Industrial will continue to contribute to the improvement of society by developing human resources and new technologies. Since our establishment in 1937, our company has continuously strengthened its position as a specialized manufacturer of diamond tools, and as an independent company engaged in a wide range of business operations both in Japan and internationally, we decide on the allocation of our expertise and resources ourselves. This is our greatest strength.

With their advanced technical capabilities and excellent lifespan, our tools provide an ideal solution for tasks requiring speed and precision. They are used in multiple sectors, ranging from electronics to transportation equipment, machinery, and construction. Moreover, they help mitigate environmental threats by reducing energy consumption and waste production.

Recently, many companies have started leveraging their business activities to address social issues and contribute to the creation of a sustainable society. We aim to participate in this effort by improving our products and thus assisting our customers in optimizing their production in various fields. In a constantly evolving world, innovation does not always rely on a step-by-step approach; instead, it must often be able to directly reach its goal. This innovation cannot exist without our tools.

We actively collaborate with other organizations in research and development, support cooperation between factories, and leverage the expertise and know-how accumulated over the years to further improve our technologies. Furthermore, we firmly uphold compliance with laws and regulations and have the willingness to share our skills with the younger generations because we understand that a company cannot grow without developing its human resources.

Our commitment to diamonds remains unwavering. We will continue to be a group of professionals seeking to enhance the capabilities of diamond tools and explore their full potential. We will continue to contribute to the improvement of society by developing human resources and new technologies.


Kazuki KATAOKA - Asahi Diamond Industrial Group's president

Asahi Diamond Industrial Group: A global presence

Asahi Diamond is an international industrial group specializing in the production of diamond cutting tools and cubic boron nitride (cBN) tools. Since its establishment in Japan in 1937, the company has experienced continuous growth and now has subsidiaries in more than 20 countries worldwide. This global presence is an advantage that enables offering high-quality products and services to local customers and ensures the continuous growth of the company.

Asahi Diamond de Mexico, S.A. de C.V.

Prolongacion Blvd. Campestre No.2502 Torre San Mateo I, Piso 2, Int.203 Fraccionamiento El Refugio Campestre Leon, Gto. C.P. 37156, Mexico


Asahi Diamond Industrial Malaysia SDN. BHD.

K-6-11, No2, Jalan Solaris Mon’t Kiara, 50480, Kuala Lumpur, Malaysia


Asahi Diamond Industrial Germany GmbH.

Westfäliche Strasse 169 D, D- 44309 Dortmund, Deutschland

+49 231 906 200 60 /-70

Asahi Diamond America, Inc.

9872 Windisch Road, West Chester, Ohio 45069, U.S.A.

Tel: +1 513 759 5222

Asahi Diamond Industrial Europe SAS.

47 avenue d'Orléans, CS70841 F, 28008 Chartres, France

+33 (0)2 37 24 40 40

Asahi Diamond (Thailand) Co., Ltd.

120 Ample Tower, 5th Floor, Unit 5/3 Bangna-Trad Road, Km 4, Bangna, Bangna, Bangkok 10260, Thailand

+66 02348 3861

Asahi Diamond Industrial Australia Pty., Ltd

No.81 Bassett Street, Mona Vale N.S.W. 2103, Australia

+61 2 9997 7033

Shanghai Xu Hui Diamond Industrial Co., Ltd.

Building No.7, No.1280 ,Lian Xi Road Pudong New District, Shanghai, China

+86 21 5042 6478

PT. Asahi Diamond Industrial Indonesia

Jl.Jababeka Raya Blok F No.35 Cikarang Industrial Estate Bekasi 17530, Indonésie

+62 21 8936217

Taiwan Asahi Diamond Industrial Co., Ltd.

248 Hwa kong St., Pa-Deh City, Tao-Yuan Hsien, Taiwan R.O.C.


Koremura Factory

365, Tokiwa, Kamakura-shi, Kanagawa 248-0022, Japan

+81 467-31-0721

Yamanashi Asahi Diamond Industrial Co., Ltd

800, Wakaoshinden, Tatsuoka-cho, Nirasaki-shi, Yamanashi 407-0031, Japon

+81 551-22-7501

Chiba No.2 factory

1-35, Miharadai, Chonan-machi, Chosei-gun, Chiba 297-0143, Japon

+81 475 46 3101

Chiba Tsurumai factory

787, Tabi, Ichihara-shi, Chiba 290-0515, Japon

+81 436 88 3221

Tamagawa factory

3-4-35, Kuji, Takatsu-ku, Kawasaki-shi, Kanagawa, 213-0032, Japon

+81 44833 6221

Mie factory

7-8-1, Yumegaoka, Iga-shi , Mie 518-0131, Japon

+81 595 26 7321

Asahi Diamond Industrial Co., Ltd The New Otani Garden Cour

11th floor 4-1, Kioi-cho, Chiyoda-ku, Tokyo 102-0094 Japon

+81 3 3222 6311