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  3. セイホープロダクツ 業務本部
  4. Effect of using a moisture-absorbing agent (bamboo charcoal) in conjunction with a underfloor ventilation fan.
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  • Dec 19, 2025
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Dec 19, 2025

Effect of using a moisture-absorbing agent (bamboo charcoal) in conjunction with a underfloor ventilation fan.

セイホープロダクツ セイホープロダクツ 業務本部
We highly recommend that customers who have already installed moisture control materials (such as bamboo charcoal) consider adding a subfloor ventilation fan. We will compare and verify the moisture control effects/performance of using only subfloor moisture control agents (bamboo charcoal) versus using both subfloor moisture control agents and mechanical ventilation through moisture absorption and desorption tests. *The operation time of the ventilation fan will be under desorption conditions. By adding a ventilation fan to the subfloor where bamboo charcoal mats are installed, we have confirmed improvements in ventilation and airflow effects, leading to enhanced moisture absorption and release efficiency of the bamboo charcoal mats and reduced drying time. Furthermore, it is expected that the combined use of the ventilation fan will further improve moisture control performance, leading to a decrease in subfloor humidity and enhanced drying effects on the moisture content of the wood. Please be sure to read the [related materials] and [related links]. ↓ ↓ ↓
Effect graph when used in conjunction with the ventilation fan.
Effect graph when used in conjunction with the ventilation fan.
Environmental improvement moisture control agent "Underfloor Dry" bamboo charcoal mat
Environmental improvement moisture control agent "Underfloor Dry" bamboo charcoal mat
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竹炭マット改正251104.pdf[1023981]

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Underbed Dry Bamboo Charcoal Mat | Seihou Products Co., Ltd.
TM-450

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02.tikutan02.jpg

Underfloor moisture control mat - Underfloor dry bamboo charcoal mat

We support creating a comfortable living environment by controlling humidity.

The bamboo charcoal mat for under the floor is made from natural materials, making it environmentally friendly and helpful for creating a comfortable living environment. Charcoal has been used for a long time due to its effectiveness in controlling humidity and prolonging the life of buildings. It is said that the surface area of bamboo charcoal (an indicator of adsorption capacity) is about ten times larger compared to the representative wood charcoal, binchotan. Additionally, bamboo charcoal has a structure resembling countless fine pipes, which not only provides high adsorption power but also decomposes the adsorbed substances, demonstrating long-term removal of harmful substances and deodorizing effects. By laying a bamboo charcoal mat under the floor, it continues to absorb moisture during the summer for an extended period, preventing the decay of foundations and floorboards, thus improving the durability of the building. *Using it in conjunction with an underfloor ventilation system will enhance its effectiveness. 【Features】 ○ Humidity control and deodorizing effects ○ Effective against mold and pest prevention ○ Protects important buildings ○ Energy-saving effects ○ Made from natural materials, environmentally friendly For more details, please contact us or download the catalog.

  • Dehumidifier
  • Ventilation and Exhaust

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風太郎ユニット(かくはんマイナーチェンジ).jpg

Underfloor ventilation "Kazetaro"

A comfortable indoor environment! Prevents condensation and extends the lifespan of the building.

The underfloor ventilation "Kazetaro" maintains a comfortable condition for wood by forcibly introducing air into the underfloor space. It is particularly effective in eliminating condensation. Underfloor ventilation also affects the indoor environment, reducing the conditions for the growth of dust mites and mold, which benefits the health of the family. The Kazetaro unit uses a hybrid sensor to detect the amount of water vapor (humidity) in the outside air, and the hybrid controller independently controls the Kazetaro blower type and Kazetaro mixer type, creating optimal ventilation operation for the wood under the floor. 【Features】 ○ Improves ventilation effectiveness to prevent pest breeding ○ Forcibly introduces air into the underfloor space to prevent condensation ○ Maintains a comfortable condition for wood, extending the lifespan of the building ○ Reduces the conditions for the growth of dust mites and mold, making the indoor environment comfortable For more details, please contact us or download the catalog.

  • Ventilation and Exhaust

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Underfloor humidity control mat - Underfloor dry bamboo charcoal mat

Underfloor humidity control mat - Underfloor dry bamboo charcoal mat

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Effect of using a moisture-absorbing agent (bamboo charcoal) in combination with an underfloor ventilation fan.

Effect of using a moisture-absorbing agent (bamboo charcoal) in combination with an underfloor ventilation fan.

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Seihō Products General Catalog

Seihō Products General Catalog

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Hyper CLT flooring panel

CLT flooring boards that can also be used in material yards | Hyper CLT flooring boards

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In a civil engineering site material yard, not only is material storage conducted, but also the frequent movement of trucks and heavy machinery, unloading, and the movement of workers. On unpaved ground, mud and ruts can occur due to rain, which may reduce work efficiency. Hyper CLT mats are civil engineering CLT materials that utilize wood CLT. By laying them in material yards or storage areas, a work space that facilitates the movement of vehicles and heavy machinery can be established while protecting the ground. They can be laid only in necessary locations, and relocation or repurposing in accordance with construction progress is also possible. The 5×10 panel weighs approximately 230 kg, and the 5×20 panel weighs about 460 kg, making them lightweight and easy to install and remove even with small machinery. After use, they can also be utilized as temporary roads, access routes, or heavy machinery work yards. Additionally, they offer unique benefits of wood, such as glare reduction, noise suppression, and CO2 fixation. As a registered technology with the Ministry of Land, Infrastructure, Transport and Tourism under NETIS "TH-250021-A," these wooden mats can also be used for environmental improvement in material yards and innovative public works.

Aug 20, 2026

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AAEON UP Series Board for Embedded Applications with Intel Core Processor (Series 3) [UP WCL]

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Features: ● Equipped with Intel Core Processor (Series 3) ● Onboard LPDDR5 memory: up to 24GB ● Onboard UFS storage: up to 256GB ● 2.5GbE (2.5 Gigabit Ethernet): 1 port ● HDMI 2.1 (TMDS): 1 port ● USB 3.2 Type-A: 3 ports ● 10-pin GPIO: 1 port ● Power input: 12V DC * This model does not include an operating system.

Aug 20, 2026

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AAEON UP Series AI Development Board with Intel Core Series 3【UP Nexus WCL】

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Features: ●CPU: Intel Core Processor (Series 3) ●Onboard Memory: Onboard LPDDR5 (up to 48GB) ●Onboard Storage: Onboard UFS (up to 256GB) ●LAN: 2.5GbE ×2 (Intel Ethernet Controller I226-IT) ●USB: USB 3.2 Type-A ×2, USB 3.2 Gen 2x2 Type-C ×1 ●GPIO: 40-pin GPIO ×1 ●Video Output: HDMI 2.1 (TMDS) ×2, DP 1.4a (via USB Type-C) ●Serial Port: RS-232/422/485 (10-pin header) ×2 ●Expansion Slots: M.2 2230 E-Key ×1, M.2 2280 M-Key ×1, M.2 2242 M-Key ×1 ●Security: TPM 2.0 ●Power Input: DC 12–24V input

Aug 20, 2026

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AAEON UP Series Edge PC equipped with Intel Core Series 3 [UP Nexus WCL Edge]

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Features: ● Equipped with Intel Core Processor (Series 3) ● Onboard LPDDR5 memory: up to 48GB ● Onboard UFS storage: up to 256GB ● 2.5GbE (Intel Ethernet Controller I226-IT): 2 ports ● USB 3.2 Type-A: 2 ports ● USB 3.2 Gen 2x2 Type-C: 1 port ● 40-pin GPIO: 1 port ● HDMI 2.1 (TMDS): 2 ports ● DisplayPort 1.4a: via USB Type-C ×1 ● RS-232/422/485 serial ports: 2 ports ● M.2 2230 E-Key: 1 slot ● M.2 2280 M-Key: 1 slot ● M.2 2242 M-Key: 1 slot ● Equipped with TPM 2.0 (Trusted Platform Module) ● Input power: DC 12–24V * This is a model without an operating system.

Aug 20, 2026

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Metal Crack Repair: MS Method for Repairing Cracks and Fractures in Machinery Equipment

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Metal cracks are one of the concerns in equipment maintenance operations. Conventional welding repair methods can alter the base material around the crack due to heat, leading to residual stress and deformation, which always carries the risk of "crack recurrence" or "secondary damage." Hinode Water Supply Equipment Co., Ltd.'s "Mechanical Stitching Method" is a new technique that allows for metal crack repair without the application of heat. By using special bolts and reinforcement plates, the crack is physically removed without affecting the base material at all. Repairs can be made even in environments where open flames cannot be used. Since no heat is applied, the disassembly of equipment is minimized. For more details, please contact us or download the catalog.

Aug 20, 2026

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