Exhibited at MECT2019 Mechatronics Technology Japan 2019

Just a light stroke for a perfect finish - a deburring stone using super abrasive particles.

This is a deburring grinding stone that can be directly attached and used with a disc grinder or air sander. It uses super abrasives, providing excellent cutting performance and a smooth finish with minimal secondary burrs. Since it can achieve a finish in one go, it reduces processing time and significantly improves work efficiency!

• Grindstone

This one tool is for detailed manual work!

<Reaches ultra-fine details with a pointed tip> The sharp tip is equipped with diamond all the way to the end, allowing work in narrow areas of 0.5mm or less. It can be used on a wide range of hard materials such as ultra-hard, ceramics, and hardened steel, as well as reinforced plastics, carbon, hard rubber, and glass, making it easy to use without shape distortion. <Applications> - Fine adjustments of molds - Narrow details of precision parts - Removal of micro burrs - Repair of complex shapes - Areas that are difficult to reach with conventional tools - Edge treatment of small diameter drills - Fine areas of watch parts

• Other cutting tools

Corner file with usable edges; many corners can be used with angled tips.

This is a reversible type with diamonds on both sides, offering double the value. The tapered ends on both sides allow for precise processing even in narrow areas. With numerous edges, it is possible to work on corner sections. The shape is a prism, which allows for the use of flat surfaces, improving work efficiency. Sizes: □0.5, □0.7 Grain sizes: #600, #800.

• Hand polishing and filing

Stable cutting performance that does not depend on the material.

"Visudy BN Bond" is a CBN wheel for grinding that pursues satisfactory cutting performance for iron-based materials. It is a new bond that uses a special resin and is balanced with fillers that consider the different properties of various iron-based materials. It eliminates issues such as workpiece burning due to wheel clogging, unpleasant noise, dimensional accuracy deviations, and warping in thin workpieces. Compared to our conventional products and those from other manufacturers, it significantly reduces power consumption and grinding resistance across the board, maintaining excellent cutting performance. [Features] - Stable cutting performance regardless of material For more details, please contact us or download the catalog.

• Other cutting tools

You can take as much as you want, and you can take exactly what you aim for.

The soft bond with a good bite is designed to easily transmit the sensation of the workpiece to your fingertips. It can be used effectively for chipping, burr removal, and precise honing. 【Features】 ○ A well-balanced bond in terms of surface roughness, cutting performance, and durability. For more details, please contact us or download the catalog.

• Hand polishing and filing

Difficult to clog, difficult to chip.

This is a diamond resin bond focused on cutting performance, aimed at reducing clogging without putting stress on the work. Ceramics have a larger variation in strength compared to metal materials, and stress tends to concentrate on defects such as cracks and surface scratches that occur after cutting. It is effective in the removal of defect areas that affect breakage. 【Features】 - Excellent cutting performance for various ceramics - Extremely good surface roughness For more details, please contact us or download the catalog.

• Hand polishing and filing

It is resistant to deformation and has a long lifespan.

It is a bond with a strong ability to retain abrasive particles unique to diamond-petrified materials, making it resistant to shape distortion and providing a long lifespan. It can be used for chamfering, deburring, and finishing, making it a versatile tool to have in the workplace. 【Features】 - Excellent cutting ability that is not limited to specific materials - Outstanding durability For more details, please contact us or download the catalog.

• Hand polishing and filing

Rich variety, selectable granularity

The vibrant green pattern uses rubber material that places less burden on fieldwork. Color rings are attached for easy identification of granularity. We offer a lineup of granularity not found in other companies, catering to material, application, and processing purposes. 【Features】 ○ A handle that feels easy to grip ○ Easily recognizable colors ○ A wide range of granularity tailored to your needs For more details, please contact us or download the catalog.

• Hand polishing and filing

The diamond paste comes pre-mixed with a diluent, so there is no need to mix it yourself. It is in gel form, so you can use it immediately after taking it out of the container.

"Miragel" is hassle-free, uniform, and waste-free. The diamond paste is pre-mixed with a diluent to achieve the optimal viscosity for wrapping, so you can use it immediately after taking it out of the container. Being silicone-based, there is no concern about alteration or degradation. It does not contain harmful substances, allowing for safe use. The need to purchase diluent is eliminated, resulting in cost savings. We offer three types based on the amount of diamond, all at a uniform price. Additionally, under our quality control, it is mixed using a dedicated machine with a standardized formulation. It can be applied directly to wrapping tools and workpieces, allowing you to use only the necessary amount. For more details, please download the catalog or contact us.

• Grindstone

A highly versatile oil-based diamond paste that is easy to spread and blend. Additionally, the price remains consistent even if the diamond content ratio changes!

"Mirror Paste" is finished with carefully selected ingredients for high efficiency and precision. The specialized oil with excellent lubricity and uniformity maximizes the performance of diamonds. It is formulated with an optimal viscosity for polishing, which also improves work efficiency. With the dedicated diluent, you can use it at a freely adjustable viscosity while maintaining the performance of the diamonds. It does not contain harmful substances to the human body, making it safe. The syringe comes with a highly sealed screw cap. Please use the included diluent when using it. For more details, please download the catalog or contact us.

• Grindstone

It is ideal for jobs that are difficult to clean with oil. Since it is water-soluble, it can be easily washed away with water. Additionally, the price remains uniform even if the diamond content ratio changes!

"Aqua Paste" is formulated with water-soluble ingredients that are ideal for both polishing and cleaning. It uses only safe materials and does not contain any harmful substances for the human body, so you can use it with peace of mind. If you are using a diluent, please use the one provided. For more details, please download the catalog or contact us.

• Grindstone

We bring out a new shine with the latest abrasives.

We use abrasive grains that allow for more cutting edges to repeatedly perform moderate micro-fracturing, resulting in a high-quality finish that is less prone to scratches, making them ideal for polishing. Additionally, we offer high-concentration grades with increased diamond content, such as GOLD SILVER.

• Grindstone

As the new year begins, I would like to extend my heartfelt congratulations on your continued prosperity. I sincerely appreciate your exceptional support throughout the year. This is the STJ Group (Santelecom Japan, STJ Rentec). Now, I am pleased to announce that we will be opening our "Transceiver & Smartphone Rental Shop" simultaneously at three locations nationwide on January 26 (Monday)! ■ List of Services to be Offered - Same-day pickup/return of rental equipment - Usage explanations and demonstrations of rental equipment - Wireless solutions consultation desk - Mobile BPO service counter As a special promotion to celebrate the opening of the rental shop, we are currently running a special price campaign for picking up rental equipment at the shop! For more details, please contact us!

【Notice of Year-End and New Year Holidays】 Thank you very much for your continued support. Our company will be closed for the year-end and New Year holidays as follows: Holiday Period: Saturday, December 27, 2025 – Sunday, January 4, 2026 Please note that inquiries and orders received during the holiday period will be addressed sequentially starting from Monday, January 5, 2026. We apologize for any inconvenience this may cause and appreciate your understanding.

We would like to inform you about our participation in the IT Trend EXPO 2026 Spring. 《Exhibition Information》 With the concept of "New encounters will change tomorrow's work," one of the largest online exhibitions in the industry will be held. NTT TechnoCross will exhibit in the Human Resources Comprehensive category. We have prepared numerous discussions and sessions featuring special guests who are active on television, allowing even those who are usually busy to efficiently gather information on products and services related to IT and DX. Additionally, the first 10,000 participants will receive a 500 yen Amazon gift card. Please apply early. 《Exhibition Overview》 March 3 (Tuesday) to March 7 (Saturday), 2026, online (free: pre-registration required) 《Participation Application》 https://it.expo.it-trend.jp/key/opl7kgdj *Please apply (free) from the "Receive Ticket / Proceed to Participation Registration" link at the above URL.

The TV commercial "What Will You Do in the New Era?" featuring model and actress Akane Horita will begin airing on December 26, 2025. This work expresses the desire of Tokei Densan to respond to the diverse needs of various industries in today's society, where new technologies, such as the expansion of the AI market, are competing with each other, and to nurture and blossom our customers' futures. Please pay attention to Akane Horita, who is dressed in stylish outfits, listening to the concerns of the target audience and offering support. # CM Overview Title: "What Will You Do in the New Era?" (30 seconds / 15 seconds) CM URLs 30 seconds: https://youtu.be/y_lMs0HRj3w 15 seconds: https://youtu.be/egpzMfh8Kok

Thank you very much for your continued support. We would like to inform you that our company will be closed for the year-end and New Year holidays as follows: Year-end and New Year holiday period: December 27, 2025 (Saturday) to January 4, 2026 (Sunday) We apologize for any inconvenience this may cause and appreciate your understanding. *Please note that inquiries made through our website will also be responded to after January 5, 2026 (Monday).