We will be exhibiting at interOpto2025 / Light and Laser Science and Technology Fair (Ultraviolet Fair).

"IHU250H" is a moldable ultraviolet-transmitting glass that can be processed at lower temperature ranges compared to quartz and has a thermal expansion rate close to that of metals.

【Product Introduction: IHU250H】 The "IHU250H" is a glass that functions as an optical glass filter that transmits ultraviolet light while also being usable as a molding material. Its lower processing temperature compared to quartz and thermal expansion rate closer to that of metals make it suitable for metallization. For detailed optical properties, please refer to the downloadable materials. 【Features】 ■ Processing temperature range is lower than that of quartz (1600-1700℃) (IHU250H: 563℃) ■ Thermal expansion rate is closer to that of metals than quartz, making it suitable for metallization ■ Available for sale as molding materials such as block materials, rod materials, and ball lenses

• others

Consistent production from prototype to mass production through innovative technology.

Product Introduction: Glass Molded Lenses Glass molded lenses, created through die-casting molding, achieve complex shapes that are difficult to produce through polishing and lens structures that previously required assembly, all in a single molding process. Most products are fully customized according to customer requests, with flexible support from prototyping to mass production. In addition to the lens molding technology developed over many years, we utilize unique measurement and inspection techniques to provide high-precision products. We cater to a variety of shapes and specifications, including not only lens arrays but also aspherical lenses, Fresnel lenses, rod lenses, and irregularly shaped lenses. Features ■ Integrated glass lenses through molding ■ Achieves complex shapes and integrated structures, enabling shapes that are difficult to polish ■ Supports prototyping to mass production with full customization ■ Proven track record with various shapes including aspherical lenses, Fresnel lenses, rod lenses, and irregularly shaped lenses ■ Guarantees high quality with unique measurement and inspection technologies

• Plate glass and mirrors
• Glass mirror

The "ISK Series" is designed to almost completely block infrared rays while achieving a very high transmittance of visible light.

【Product Introduction: ISK Series】 The infrared absorption filter "ISK Series" is an optical glass filter designed to block almost all thermal rays (infrared) while allowing a high transmission rate of visible light. It is widely used in various fields such as laser protection glasses, heat-resistant filters, YAG laser blocking applications, and medical devices. 【Features】 ■ Almost completely blocks infrared (thermal) rays ■ Extremely high transmission rate for visible light ■ Available in ultraviolet transmission types, offering a wide range of applications ■ Numerous achievements in YAG laser blocking applications both domestically and internationally

• others

An article has been published about the case of introducing the expense reimbursement system "Rakuraku Seisan" at TSP Corporation. ~ In the case of TSP ~ Before the introduction, there were challenges such as dealing with the "paper" sent from various locations and the reliance on specific individuals for the tasks. After the introduction, the input and checking of FB data, which used to take 2 to 3 hours, can now be completed in just 5 minutes. Additionally, the mindset of the accounting department, which was previously reliant on manual entry, has changed. [Case Overview] ■ Challenges before introduction - Dealing with "paper" sent from various locations, reliance on specific individuals ■ Key points of introduction - A robust support system for setup and operation - Easy to start from a small scale both financially and functionally *For more details, please refer to the related links or feel free to contact us.

The facility operating the nurse call system has made the bed exit sensor wireless, allowing it to notify in conjunction with the nurse call. By simply connecting the mat sensor "Foldable Thin Matt-kun," the body movement call "Ugo-kun," and the wheelchair body movement call "Ayumi-chan" to the transmitter HB-RS, you can make the bed exit sensor wireless. The infrared sensor "Just Place Pole-kun" has the transmitter HB-RS built-in. 【Features】 ○ Wireless conversion by simply connecting existing sensors to the transmitter HB-WSK. ○ The bed exit sensor notifies wirelessly in conjunction with the nurse call. ○ Up to 5 transmitters can be registered with one receiver. ○ The communication distance between the transmitter and receiver is approximately 10 meters. ◎ For more details, please contact us or download the catalog.

Full and empty management refers to the real-time display of parking availability and the management of efficient use of parking spaces. By utilizing Hotron's sensors, drivers can quickly discover available parking spaces, achieving efficient parking lot operations. ■ For large parking lots, the "floor management method" and "block management method," which focus on cost reduction, are recommended. Sensors are installed at regular intervals to count the number of vehicles passing through. This method offers the advantage of easy installation and low costs. 【Target Products】 - Vehicle Count Sensor CCS2 - Ultrasonic Sensor HM-UX2/UW2 ■ For smaller scale operations, the "space management method," which installs sensors in each parking space to display availability with high accuracy, is recommended. By ensuring accurate full and empty displays, it helps prevent unnecessary entry of new vehicles and enables safe parking lot operations. 【Target Products】 - Occupancy Detection Sensor HM-UX2/UW2 - Occupancy/Pass Detection Sensor HM-LC6 - Occupancy Detection Sensor HM-LC7/LC7-FLS - Occupancy/Pass Detection Sensor HM-S6 - Occupancy Detection Sensor HM-S8

Castem Co., Ltd. will exhibit at the "Monozukuri World Osaka - Mechanical Components Technology Exhibition" held at Intex Osaka from Wednesday, October 1 to Friday, October 3, 2025. We will showcase lost-wax precision casting and MIM (Metal Injection Molding) products, as well as introduce our new technology, mold-less casting "Digital Cast." In addition to our popular casting demonstrations, we will present case studies on solving issues related to metal parts. Please utilize our "Technical Consultation Booth" to learn about optimal manufacturing methods tailored to your needs, from ultra-small lots to mass production. 【Exhibition Overview】 Dates: October 1 (Wed) - October 3 (Fri), 2025, 10:00 AM - 5:00 PM Venue: Intex Osaka (1-5-102 Nanko-Kita, Suminoe-ku, Osaka City, Osaka Prefecture) Exhibition Booth Number: Hall 6, B Hall 51-1 Pre-registration allows for smooth entry. It is convenient to register via the URL below before your visit. We sincerely look forward to your attendance. https://www.manufacturing-world.jp/osaka/ja-jp/register.html?code=1431877272389396-VEK

From November 11, 2025 (Tuesday), at Pacifico Yokohama, we will be exhibiting at interOpto2025 / Light and Laser Science and Technology Fair (organized by the Optical Industry Technology Promotion Association / Optronics Corporation) with a focus on: - UV-transmitting glass that can be molded - Diffusion glass that can uniformly diffuse incident light - A double-sided lens array that is molded without lamination 【About the Exhibition】 Event Name: interOpto2025 / Light and Laser Science and Technology Fair UV Fair Date: November 11 (Tuesday) to 13 (Thursday), 2025 Opening Hours: 10:00 AM to 5:00 PM Venue: Pacifico Yokohama Exhibition Hall C Booth Number: C-15 Organizer: Optical Industry Technology Promotion Association / Optronics Corporation Official Website: https://www.optronics.co.jp/interopto/ We invite everyone attending this exhibition to visit our booth "Gosuzumi Seiko Glass." We sincerely look forward to meeting you on-site.