[All at Once Release] Summary of Our Company's Products

Simply installing it on the air conditioner filter reduces unnecessary power consumption. Many successful implementations.

"Continuum" is a static electricity removal sheet that maintains a constant negative potential due to the action of special natural minerals. It improves the heat exchange efficiency that decreases due to static electricity issues in air conditioning, thereby reducing the operation of the compressor and recovering the electricity costs of the air conditioner. It can be easily cut with scissors to fit the size of the filter, making it easy to install in various types of air conditioners. It has been implemented in approximately 3,300 business locations, including 250 listed companies. 【Features】 ■ Simply cut to the required size and install between the dust filter and heat exchanger ■ Capable of suppressing unnecessary power consumption in various types of air conditioners ■ Made from lightweight and flexible materials. No running costs required ■ Improves previously wasted electricity costs. Reduces environmental impact through energy conservation ■ Adopted in offices, factories, stores and facilities, hospitals and nursing homes, and tutoring schools ★ You can view materials featuring numerous case studies by clicking the download button below. Please feel free to contact us with any inquiries about the product.

• Air conditioning

With an IP66 waterproof rating, it can be installed 50 meters away from the main unit! Even in the event of extreme weather, it can be addressed simply by replacing the power supply.

Our original 'ZF series' is a power-separated LED floodlight. By using a separated power supply, it can be installed up to 50 meters away from the main unit. It can be installed in locations protected from sunlight (ultraviolet rays), rain, and saltwater. 【Features】 ■ Highest quality made in Japan Achieved with high specifications at a low cost ■ Salt-resistant specifications allow use in salt-damaged areas - Aluminum: 6063 aluminum alloy + salt-resistant coating - Stainless steel: 6063 aluminum alloy + salt-resistant coating / Arm and hinge made of SUS316 stainless steel (Note: The salt-resistant coating is applied with a 100-micron polyester resin powder coating throughout) ■ Standard lightning surge protection of 20kV Prepared for recent abnormal weather conditions ■ IP66 waterproof and dustproof Usable both indoors and outdoors (Note: The power supply part is IP67) ■ PSE certified with a 5-year warranty confidence (Note: There may be exclusions even within the warranty period. Please refer to the catalog for details.) * For more details, please request a catalog or view the PDF data available for download.

• Floodlight

Waterproof standard IP66 specification that does not affect ship radio communication.

The Honest Original "V Series" is an LED floodlight that can be used on ships. It is also effective in various locations other than ships (please refer to the applications and achievements below). 【Features】 ■ Completely waterproof, with IP66 rating for waterproofing and dustproofing, and has passed salt spray testing. ■ Compliant with PSE Electrical Appliance and Material Safety Law for safe use. ■ Equipped with a temperature protection circuit that automatically turns off the light if the power supply reaches a maximum temperature of 95°C. ■ Strong salt-resistant specifications, made of 6063 aluminum alloy with salt-resistant coating, and the arm and hinge parts are made of SUS316 stainless steel. ■ Standard lightning surge protection of 20kV, limiting current during lightning strikes for protection. ■ Compliant with EMS/EN61000-4-5, providing preparedness for natural disasters. *For more details, please refer to the PDF materials or feel free to contact us.

• Floodlight

With astonishing waterproof and dustproof performance, it can be used in various places for different purposes!

Our original "Field Light-X" is an integrated LED fluorescent light that requires no electrical work. With an IP67 waterproof rating, it can be used outdoors. Additionally, it can be connected, making it highly effective at construction sites. 【Features】 ■ IP67 waterproof and dustproof Usable both indoors and outdoors (Note: The cord part is IP63, so please be cautious when connecting.) ■ Connectable When using 100V, the 40W model can connect up to 15 units for a 100m illumination, and the 20W model can connect up to 25 units for a 145m illumination. (Note: If using 200V, please ensure not to insert 100V products and manage accordingly.) ■ Impact-resistant, made from the highest strength materials Polycarbonate construction that won't break even if stepped on. ■ 3-year warranty As a Japanese manufacturer, we provide reliable support. (Note: There may be cases where certain conditions are excluded even within the warranty period. Please refer to the catalog for details.) *For more information, please request a catalog or download the PDF data.

• Fluorescent Light Type

High brightness yet saves over 70% in power consumption! This is the environmentally friendly fluorescent light!!!

The "LB819 series" is an LED fluorescent light with a built-in power supply and single-sided power supply. ■ Safe Circuit Design - Circuit design that suppresses excessive inrush current during initial lighting - Circuit design that suppresses harmonics - Circuit design with an efficiency rate of over 90% - EMI (electromagnetic interference) suppression circuit design ■ Achieving a 40,000-hour lifespan for LED lamps - Main electrolytic capacitors have achieved test results with a designed lifespan of over 60,000 hours ■ Other Safety Circuits - Overcurrent and overvoltage protection circuits - Safety short-circuit function circuit ■ Electrolytic Capacitors 1. Achieved a test designed lifespan of 65,223 hours (7.447 years) at an operating temperature of 77.8°C 2. Achieved a test designed lifespan of 73,882 hours (8.434 years) at an operating temperature of 80.2°C 3. Achieved a test designed lifespan of 78,908 hours (9.008 years) at an operating temperature of 79.3°C 【Lineup】 3000K / 5000K / 5700K (Note: 4000K is made to order)

• Garden lighting/lights (LED/solar)

Since it is flicker-free, you won't be troubled by noise and can use it in any location.

The ballast-free type is a flicker-free LED. It can be used in various locations such as ships, heavy machinery, studios, and museums. It is our most popular product, having surpassed a total sales record of 13,000 units. *Please note that this product has polarity. 【Features】 ■ Waterproof standard IP65 Can be used indoors and outdoors due to waterproof and dustproof design ■ Flame retardant ■ Major manufacturer The LED chip part uses "Epistar" which has a cross-licensing agreement with the Japanese manufacturer Toyota Gosei ■ Energy-saving measures The power consumption of LEDs is about 1/8 compared to incandescent bulbs *This bulb is compatible with DC (12/24V). Please note that it cannot be used with non-specified power sources (such as household AC (100V)).

• Garden lighting/lights (LED/solar)

Using eco-friendly functional glass, BioGlass!

By simply adding it to the auxiliary tank of the car's radiator, it improves fuel efficiency and reduces harmful exhaust gases. Bioglass weakens the surface tension of the coolant, quickly cools the engine, promotes complete combustion of gasoline, and achieves improved fuel efficiency. 1. Add CAR UP to the auxiliary tank of the radiator. 2. The surface tension of the coolant in contact with the bioglass becomes smaller (weaker). 3. The coolant with reduced surface tension quickly cools the engine. 4. The contact area between the coolant and the engine block increases, enhancing thermal conductivity and cooling effectiveness. Additionally, the friction resistance of the coolant decreases, allowing it to circulate faster and improve cooling efficiency. 5. This allows the engine to be cooled efficiently, enabling more air to enter the cylinders. Following these steps, fuel efficiency increases, and harmful exhaust gases are reduced.

• Car and bicycle parking facilities

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.