Announcement of the establishment of the Audio Business Division

We will measure and evaluate how loud the standard floor impact is heard in the room below.

Using lightweight and heavyweight impact sound sources (tapping machine and banging machine), the floor being measured is excited to generate impact sound, and the lightweight equivalent sound pressure level and heavyweight maximum sound pressure level are measured directly below. The floor impact sound level is then determined. From these results, the L value is calculated and evaluated.

• Contract measurement

We measure and evaluate how much sound is blocked by the building's partition walls and floors.

Generate pink noise in the sound source room, measure the sound pressure levels on the source side and the receiving side, and calculate the inter-room sound pressure level difference. From the results, calculate and evaluate the D value.

• Contract measurement

We will design the necessary sash grades for the indoor target values.

It predicts the noise level exposed on the window surface based on frequency data of the sound source, position, size, and occurrence frequency, and calculates the necessary sound insulation required to meet the target value indoors.

• Contract measurement

It is possible to easily conduct sound insulation performance tests of building materials at a low cost.

"I want to know the sound insulation performance of building materials under development," "I can't spend too much on costs," "I want to know the results as soon as possible." If you have such needs, please consult us. Our acoustic laboratory can easily conduct sound insulation performance tests for building materials. (The data is not official. Please use it as reference data only.)

• Contract measurement

We measure and evaluate the indoor quietness in buildings.

We measure the road noise that penetrates from outside, as well as the noise generated during the operation of elevators and mechanical parking systems indoors, and evaluate the indoor quietness based on the analysis results (such as NC curves).

• Contract measurement

Experts in "sound" provide total support from measurement to countermeasures. Leave the noise control construction for factories to us.

In factories and similar settings, the issue of "sound" has become inseparable. At Environmental Research, we provide comprehensive support from noise control measures for equipment to the design and construction of soundproof walls, solving sound-related problems.

• Contract measurement

We will measure the reverberation time of the music room, gymnasium, conference room, and so on.

Sound sources are generated from the speakers, and data is recorded from microphones installed in several locations within the room. From the analysis results, the reverberation time of the room is calculated.

• Contract measurement

Happy New Year. Thank you very much for your exceptional support over the past year. This year, we will continue to strive to provide prompt and high-quality services, and all of our employees will work hard towards this goal. We kindly ask for your continued support and patronage. We look forward to your continued cooperation this year as well.

We would like to inform you that the company name has been changed as of January 1, 2026. New company name: KELLER Pressure Co., Ltd. (Former company name: KELLER Pressure Japan Co., Ltd.) There are no changes to the phone numbers or inquiry email. Phone numbers: 03-5944-9199, 03-5944-9198 Inquiry email: sales.jp@keller-pressure.com We appreciate your continued support.

Happy New Year! Thank you very much for your exceptional support over the past year. Yoshikawa Co., Ltd.'s Realization Division will continue to contribute to solving your challenges this year as a "Realization House" that transforms your thoughts of "I want to do this" and "Is it possible to do something like this?" into reality, utilizing our skilled stainless steel processing technology. We are pleased to announce that we will be exhibiting for the first time at "The 40th NEPCON Japan," which will be held at Tokyo Big Sight from **January 21 (Wednesday) to 23 (Friday), 2026**, to introduce our technologies and products in greater depth. At our booth, we will showcase a variety of slide-type metal mask dedicated shelves that contribute to improving productivity in the electronics field. These not only lead to efficient management and improved workability in limited spaces but can also be customized according to your needs. We invite you to visit our booth at Tokyo Big Sight during this opportunity. We welcome inquiries such as "Can this processing be done?" and look forward to seeing you there.

Insulating oil from old electrical equipment that has been in use for over 30 years may be contaminated with PCBs. Proper disposal is required by the disposal deadline. If you are using a vacuum tube oscillator, please check! - Transformers - Capacitors - Rectifiers, etc. If you have oscillators or hardening equipment, please consider updating them as soon as possible. *For more details, please refer to the PDF document or feel free to contact us. ★ For inquiries by phone, please call: Osaka Headquarters → TEL: 072-991-1361 Nagoya → TEL: 052-322-1361 Tokyo → TEL: 03-5472-1361 ★ For inquiries by email, please contact: info@fujidenshi.co.jp *When calling or emailing, please mention "Ipros" as your reference. Business hours: Monday to Friday, 9 AM to 5 PM.

From March 24 (Tuesday) to March 27 (Friday), 2026, RheaVita will exhibit as a conference sponsor at ISLFD, held in Fukuoka, in collaboration with Lifix Analytical. ISLFD is an international conference where researchers and engineers involved in freeze-drying and related technologies gather from around the world to exchange information and discuss research results and technological trends. Through our sponsorship at this conference, RheaVita will present the latest information on spin freeze-drying technology. At our booth, in addition to introducing the latest information about spin freeze-dryers, we will be open to consultations on a wide range of topics, including research and development, feasibility testing, scaling up, and comparisons with existing processes. We aim to create a valuable platform for information exchange for those asking questions such as "What is spin freeze-drying?", "What are the differences from conventional freeze-drying processes?", "What are the challenges of scaling up and reproducibility?", and "What new formulation and manufacturing approaches should be considered?". Additionally, individual meetings will be possible during the conference. If you contact us in advance, we will secure a meeting opportunity at a time that is convenient for you. Please be sure to stop by the RheaVita booth.