Notice of Golden Week Holiday Closure from Castem Co., Ltd.

Thank you very much for your continued patronage. We apologize for the inconvenience, but we will be closed during the following period. 【Closure Period】 From Wednesday, April 29, 2026, to Wednesday, May 6, 2026. Inquiries received during the closure period will be addressed sequentially starting from Thursday, May 7, 2026. We apologize for any inconvenience this may cause and appreciate your understanding. *Orders placed on various online shopping sites will still be accepted during the closure period. *Shipping of products and responses to inquiries will begin after Thursday, May 7, 2026.

At the entrance of a real estate company in Minato-ku, Tokyo, we have introduced the rental service "Majesta Fragrance" for commercial aroma diffusers, creating a fragrant atmosphere in the space. With the new start of the office relocation on April 1st, a high-quality and sophisticated scent suitable for this new beginning is spreading throughout the entrance. The "scent" that visitors first experience is one of the important elements that naturally conveys the company's impression and dignity. At Majesta Fragrance, we support the enhancement of corporate branding value through the production of scents tailored to the spatial concept. We also offer a free trial installation, so please experience the atmospheric effects that scent can bring. If you are interested in scent design, please feel free to contact us.

We will be exhibiting at the Thermal Tech 2026 event held at the Osaka Industrial Creation Center. At this exhibition, we will introduce our unique material technologies to engineers who face challenges in material selection for high-temperature environments, focusing on polyimide sheets suitable for high heat resistance and insulation applications. As attendance is by prior registration, please register through the related link before visiting, and we hope you will stop by our booth. We sincerely look forward to your visit. ◆ Our main exhibition content - PI Plates (Polyimide Laminates) - SUS/Polyimide Substrates ◆ Exhibition Details ◆ Exhibition Name: Thermal Tech 2026 (Pre-registration required) Pre-registration Method: Please register via the URL in the related link Date and Time: April 24, 2026 (Friday) 10:30 AM - 4:30 PM Venue: Osaka Industrial Creation Center, 3rd and 4th Floors (Reception on the 4th Floor)

From June 2025, measures against heat stroke in the workplace have become mandatory. Additionally, in December 2026, a "Support Package for Heat Wave Measures in Construction Work" was formulated, making heat stroke prevention during the summer a pressing issue, especially for those engaged in the construction industry. This time, we provide a collection of heat stroke prevention materials that can be utilized through Sysmet Co., Ltd.'s comprehensive weather platform, ZEROSAI X-AI. Examples of heat stroke prevention measures possible with ZEROSAI X-AI: - Cloud management of heat stroke information - Forecasting of the heat index (WBGT) tailored to the site with a mesh of 500m for up to 17 days ahead - Observation of the heat index (WBGT) in compliance with JIS standards using a black globe thermometer - Alerts for exceeding work standard values for the heat index (WBGT) via electronic bulletin boards, emails, and business chat tools like direct LINE WORKS We hope this will be useful at your sites as well.

Energy With Co., Ltd. (Headquarters: Chiyoda-ku, Tokyo, President: Yoshito Ishii, hereinafter referred to as Energy With) has acquired the naming rights for the Nabari City Youth Center located in Nabari City, Mie Prefecture, and began using the name "Energy With Hall" from April 1, 2026. Earlier this month, a new sign for Energy With was installed. About Energy With Hall Facility Overview Address: 1325-1 Matsuzakicho, Nabari City, Mie Prefecture, 518-0721 (Google Maps: https://maps.app.goo.gl/YLh6Dv6D91irLDx79) Phone Number: 0595-64-3478 Fax Number: 0595-64-8321 For more detailed facility information, please see below. Energy With Hall (Nabari City Youth Center (formerly ads Hall)) – Facility Information