[Book] Development of Optical Circuit Implementation and Devices for Next-Generation High-Speed Communication (No. 2174) [Sample available]

【Available for preview】★A comprehensive collection of device development examples and communication technology trends for optical communication.

Book Title: Development of Optical Circuit Implementation and Devices for Next-Generation High-Speed Communication －－－－－－－－－－－－－－－－－－－－－ ★Prospects for Silicon Photonics and Optoelectronic Co-Packaging Technology Towards Beyond 5G and 6G! ■ Key Points of This Book ◆ Silicon Photonics, Integrated Devices ◆ Design and Applications of Photonic Polymers ◆ Optical Connections, Optoelectronic Conversion Devices ◆ Development of Devices Supporting Optical Communication

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Regarding the "quotation" used at the forefront of sales activities: "Do we need to save everything when we revise it to Ver.1, Ver.2, etc., every time the amount or specifications change?" "Should we also keep the data from other companies that were not selected in competitive quotations?" Have you ever wondered about these questions? The Electronic Bookkeeping Act strictly demands the "authenticity" of data, but saving all processes is a significant burden for the field. This time, we will clearly explain the boundaries of the preservation obligation in a case study format, incorporating interpretations from the latest National Tax Agency Q&A. *You can read the full text from the note in the "Related Links." [Contents of this article] 1. The boundary of the preservation obligation lies in "sending to external parties." Items sent externally are "generally required to be preserved." Items that have not been sent externally have "no preservation obligation." 2. Judgment from the sending side: "Is it linked to a transaction?" 3. Judgment from the receiving side: "The perspective of the 'Corporate Tax Act' is important." ■ Note! "Version revisions" and "corrections/deletions" are different things. ■ A smart way to ensure reliable "version management." ■ Summary.

We plan to exhibit at the Disaster Prevention Industry Exhibition 2026, which will be held at Tokyo Big Sight in the last week of January. We will showcase products such as the "Electric Stair Climbing Human Cart," an electric stair climbing device that allows people to ascend and descend stairs while seated in a wheelchair. Please be sure to visit our booth. ------------------------------- Our booth number: 7B-38 ------------------------------- 【Dates】January 28 (Wednesday) to January 30 (Friday), 2026, 10:00 AM to 5:00 PM 【Venue】Tokyo Big Sight, East Hall 【Admission Fee】Free for registered attendees, those with invitations, and junior high school students and younger. *For others, an admission fee of 1,000 yen will be charged.

We plan to exhibit at the HVAC&R JAPAN 2026, the 44th Refrigeration, Air Conditioning, and Heating Exhibition, to be held at Tokyo Big Sight in the last week of January. You will be able to experience our stair dollies series, industrial endoscopes, and more. Please be sure to visit our booth. ------------------------------- Our booth number: 4A-07 ------------------------------- 【Exhibition Name】HVAC&R JAPAN 2026, the 44th Refrigeration, Air Conditioning, and Heating Exhibition 【Dates】January 27 (Tuesday) to January 30 (Friday), 2026, 10:00 AM to 5:00 PM (until 4:00 PM on the last day) 【Venue】Tokyo Big Sight, East Exhibition Halls 4, 5, and 6 【Admission】Pre-registration required (free)

The first store of the new business format, Petrichor Bakery and Café, developed by Sanmarc Holdings. The name "Petrichor" means "the smell of earth that rises from the ground after it rains." It was named with the desire to provide a place where people can take a break and refresh themselves in a healing space away from the hustle and bustle of everyday life. We have adopted it for the main counter's tabletop. The atmosphere of the counter's tabletop has satisfied the client! Color pattern: Shell FS115 Produced by: Sanmarc Holdings Co., Ltd. Design company: coda design studio Design and planning: Yusuke Nishiwaki Construction: Gran Create Co., Ltd. Photo: Hiroki Kawada Building type: Bakery café, Café Location: 5-24-55 Sendagaya, Shibuya-ku, Tokyo 151-0051, NEWoMan Shinjuku 2F https://www.instagram.com/petrichor_bakery_cafe/

Introducing Majesta Fragrance to a girls' bar located in Kanagawa Prefecture! With our commercial aroma diffuser rental service "Majesta Fragrance," you can create a pleasant scent for your store or office starting at 4,400 yen per month! A one-week free trial installation is also available before implementation. If you are interested in enhancing the scent of your store or office, please feel free to contact us.