We will be exhibiting at the 20th Mechanical Elements Technology Exhibition! There will be a demonstration of the polishing robot system!

Select the type according to the purpose! Ideal deburring and grinding/polishing are possible!

■For catalog downloads and inquiries, please visit the following URL and click on "Request Materials" below. http://www.koyo-sha.co.jp/ The Regibon KF wheel is a flap wheel that uses Regibon abrasive cloth. Additionally, you can choose from several types of abrasive cloth based on your application, making it suitable for various grinding processes. It also has superior grinding power and a long lifespan compared to regular wheels, making it ideal for automatic grinding machines. <Features> ■Available in five types to choose from based on application. ■Can be used universally from deburring to grinding of metals. ■Superior grinding power and long lifespan compared to standard flap wheels, making it suitable for automatic grinding machines. <Performance by Type> ・CAT…Very strong grinding power. ・EAK…High strength due to reinforced base material. For general metals. ・SAK…Flexible base material with uniform grinding marks. ・WAK…For medium and fine grain sizes. High grindability and flexibility. ・ABR…A specialized fine grain abrasive cloth that balances grinding power and finish.

• Other cutting tools

Suitable for extensive buffing and polishing! Bias cotton buff with pleats formed.

■For catalog downloads and inquiries, please visit the URL below and click on "Request Materials Here." http://www.koyo-sha.co.jp/ This is a buff with a thickness of 12 to 16 mm, made by gathering bias-cut cotton fabric into numerous pleats and securing the center with a metal fitting. While the number of cotton layers is 16 plies, the greater the number of pleats, the higher the rigidity. It is graded into five levels (M-0, 2, 4, 6, 8) ranging from the softness equivalent to loose cotton buffs to the hardness equivalent to spiral cotton buffs. For selection in the polishing process, M-4 to 8 is used for coarse and medium polishing, while M-0 to 2 is used for finishing polishing. 【Features】 ○ Long lifespan due to the bias structure. ○ Air is expelled from the center to the periphery, providing a cooling effect. ○ The pleated surface results in a larger buff surface area, enhancing abrasive retention performance. ○ Available in versions using M fabric and C fabric.

• Other abrasives

Excellent familiarity with work! A buff that combines rigidity and flexibility.

For catalog downloads and inquiries, please visit the following URL and click on "Request Materials Here": http://www.koyo-sha.co.jp/ The "Wave Sisal Buff" has an excellent combination of moderate rigidity and flexibility, making it highly adaptable to the workpiece. Due to its regular pleated structure, it is designed to minimize the appearance of section lines even when used in layers. Its good abrasive retention allows for sustained polishing capability, resulting in a uniform polished surface. 【Specifications】 ○ Thickness: Approximately 17mm

• Other abrasives

Amazing polishing power! Experience the shine recognized by professionals with this sisal buff for disc grinders.

■For catalog downloads and inquiries, please visit the following URL and click on "Request Materials" below. http://www.koyo-sha.co.jp/ 【Features】 It has greater polishing power than conventional portable polishing tools because it can polish at high speeds. Being a unit type, it has good compatibility with the workpiece, and at the same time, the buff surface is less likely to clump, providing stable polishing effects. By selecting the appropriate buff polishing agent, it is possible to achieve a rough polish that removes #240 grit marks, up to a polishing finish equivalent to #400 grit. ○ After using the offset sisal, using the offset felt will yield outstanding gloss.

• Other abrasives

We offer a wide range of buffing abrasives for iron and stainless steel.

For catalog downloads and inquiries, please visit the following URL and click on "Request Materials Here": http://www.koyo-sha.co.jp/ The buffing abrasives for "iron and stainless steel" include a wide range of products tailored to various applications, such as "Sizer 1" for use with sisal buffs, "Prince Lime" for medium polishing and finishing, and finishing products like "Blue Stick G-800" and "Blue Stick K-1" for use with cotton buffs.

• Other abrasives

On April 14, 2026 (Tuesday), Koichi Yokoyama, President and CEO of Paper Logic Co., Ltd., will be a speaker at the "JDDS Seminar - Solving the Revised Construction Business Act with DX!" JDDS (Juroku Densan Digital Service Co., Ltd.) is a company that provides digital solutions as a subsidiary of Juroku Financial Group. Currently, in the construction industry, the full enforcement of the "Revised Construction Business Act" has led to an increase in required documents, while the strong tradition of paper usage has resulted in a delay in digitalization. Additionally, the need to comply with the Electronic Bookkeeping Act has further burdened the field, bringing it close to its limits. In this seminar, our representative, Yokoyama, who has extensive experience as a certified public accountant and tax accountant, will thoroughly explain the key points to be aware of in practice regarding the "Revised Construction Business Act" and the "Electronic Bookkeeping Act" in an easy-to-understand manner.

On April 16, 2026 (Thursday), Koichi Yokoyama, President and CEO of Paper Logic Co., Ltd., will be a speaker at the "JDDS Seminar - Solving the Revised Construction Industry Law with DX!" JDDS (Juroku Densan Digital Service Co., Ltd.) is a company that provides digital solutions as a subsidiary of Juroku Financial Group. Currently, in the construction industry, the full enforcement of the "Revised Construction Industry Law" has led to an increase in required documents, while the strong tradition of paper usage has resulted in delays in digitization. Additionally, the need to comply with the Electronic Bookkeeping Preservation Law has further increased the burden on the field, nearing its limits. In this seminar, our representative, Yokoyama, who has extensive experience as a certified public accountant and tax accountant, will thoroughly explain the key points to be aware of in practice regarding the "Revised Construction Industry Law" and the "Electronic Bookkeeping Preservation Law" in an easy-to-understand manner.

[Speaker] Naoki Nakazaki, Partner Attorney, Anderson Mori & Tomotsune Foreign Law Joint Enterprise [Lecture Topics] 1. Overview of AI Principles and Code and its Position in Japan's AI Governance 2. How should we interpret "Comply or Explain"? 3. Framework for Disclosure 4. AI Learning and Copyright as Peripheral Issues 5. Comparison with Transparency Requirements of the EU AI Act 6. Comparison with Transparency Requirements at the State Law Level in the U.S. 7. Impact of AI Types (High-Risk AI, Conversational AI, Deepfakes) 8. Q&A *The content of the lecture may change according to the latest trends.

[Speakers] Taisuke Takamatsu, Principal Director, Accenture Ltd. Hiroki Masuyama, Manager [Presentation Topics] 1. Market structural changes brought about by the expansion of AI data centers 2. Redefining cooling and power equipment architecture through AI implementation 3. Newly emerging business opportunities in the cooling and power equipment sector 4. Winning strategies that Japanese companies should target 5. Q&A / Business card exchange

[Instructor] Naoki Kunimine, President of Thermal Design Lab, Inc. [Key Lecture Content] The use of AI has rapidly expanded, starting with ChatGPT. AI processing consumes several times more power than search processing, and deep learning requires large capacity and high-speed processing, causing the heat output of NVIDIA GPUs to exceed 1 kW. In the construction of data centers that aggregate these, not only ICT equipment but also cooling systems such as air conditioning consume a lot of power, making the reduction of PUE (Power Usage Effectiveness: total power consumption of the data center ÷ power consumption of IT equipment) a challenge. AI servers exceed the power consumption limit of 45 kW/Rack, known as the air cooling limit, and indirect/direct liquid cooling and immersion cooling are beginning to be adopted. Data centers are progressing in power reduction through the adoption of aisle containment and efficient air conditioning systems. This lecture will provide a broad explanation of the latest trends in these cooling technologies.