We will be exhibiting at the 24th Semiconductor and Sensor Packaging Exhibition / Specialized Exhibition for Semiconductor Backend Processes (ISP).

In collaboration with Panasonic Environmental Engineering Co., Ltd., we have newly developed an electroless copper plating process called "PLOPX" that achieves high adhesion on glass substrates!

Glass has high smoothness and insulation properties, making it excellent in signal transmission characteristics and attracting attention as an interposer material necessary for 2.5D implementation in semiconductor packaging. Various adhesion layers have been researched for improving adhesion to glass materials, including sputtering methods and sol-gel methods. Our company has developed an electroless copper plating process called "PLOPX," which achieves high plating adhesion to glass substrates by using metal oxides deposited via Liquid Phase Deposition (LPD) as the adhesion layer. This process allows all steps to be treated using wet methods.

• Chemicals

Okuno Pharmaceutical Industry introduces plating chemicals and processes under the theme of "OKUNO products contributing to the development of printed circuit boards/semiconductor package substrates"!

From prototype creation to introducing outsourcing partners, please feel free to consult us about any surface treatment concerns. Okuno Pharmaceutical Industry will be presenting the latest plating chemicals and processes at the 24th Semiconductor and Sensor Packaging Exhibition / Semiconductor Backend Process Specialized Exhibition (ISP), which will be held at Tokyo Big Sight from January 25 (Wednesday) to January 27 (Friday), 2023. 【Related Technology Associations】 ◆ Latest surface treatment processes and plating chemicals for semiconductor wafers https://premium.ipros.jp/okuno/product/category/62111/ ◆ Latest plating and surface treatment chemicals for polyimide, PET, LCP, and glass https://premium.ipros.jp/okuno/product/category/49378/ ◆ Printed circuit boards, printed wiring boards, and circuit formation technology https://premium.ipros.jp/okuno/product/category/61629/ A company introduction video titled "Turning Imagination into Reality" is currently available on our website. ◆ Okuno Pharmaceutical Industry Co., Ltd. website https://www.okuno.co.jp/

• Surface treatment contract service
• Chemicals
• Coating Agent

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).