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  6. Truly a human refrigerator! The 'Do Hiemon BOX' for instant cooling of whole items is now on sale.

Truly a human refrigerator! The 'Do Hiemon BOX' for instant cooling of whole items is now on sale.

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last updated:Jun 09, 2026

KOYAMA CO., LTD. Head office, Tochigi branch, Tokyo branch, Kawasaki branch, Shizuoka branch, Osaka branch, Nagareyama local office, 4 overseas local companies (the Philippines, Shanghai, Hong Kong, Vietnam)
KOYAMA CO., LTD. Head office, Tochigi branch, Tokyo branch, Kawasaki branch, Shizuoka branch, Osaka branch, Nagareyama local office, 4 overseas local companies (the Philippines, Shanghai, Hong Kong, Vietnam)
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Full-body cooling from head to toe! The personal cooling box "Do Hiemon."

We have achieved "cooling the entire body" which was not possible with previous heat countermeasure products. When you sit inside the box, a breeze blows from the back, and cool air hits your neck just right. The cool air is about 5°C, providing a refreshing sensation similar to that of a refrigerator's chilled compartment. Compared to conventional localized cooling methods, it effectively cools the body. Additionally, it automatically stops after 20 minutes to prevent excessive cooling. There is no need for installation work, so it can be used immediately, and it is suitable for both indoor and outdoor settings. The electricity cost is approximately 16 yen per hour! Its energy-saving performance is about half that of a spot air conditioner. We have demo units available. Please feel free to contact the Development Sales Department of Koyama Co., Ltd. at ☎03-3363-3711.

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Truly a human refrigerator! The 'Do Hiemon BOX' for instant cooling of whole items is now on sale.

  • Related Link - https://www.orange-book.com/ja/c/campaign/P-202603…
  • Special site - Product/service details - https://pr.mono.ipros.com/koyama/product/

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【Specifications】 Type: DHE-BOX Function: Cooling only Power supply: Single-phase AC 100V 50/60Hz Operating range: Ambient temperature 20–40℃ Power consumption: 636W (at ambient temperature 35℃, airflow: high, cooling operation: high) External dimensions (mm): Width 931, Depth 1,202, Height 2,031 Internal box dimensions (mm): Width 864, Depth 1,113, Height 1,750 Total volume (㎥): 1.3 Product weight (kg): 293 Outer casing: Stainless steel plate Inner casing: Bottom: Stainless steel plate, Others: Steel plate Casing insulation material: Polystyrene foam Door: Acrylic resin Lighting: LED Casters: Swivel casters with stopper (4 locations) Seat load capacity (kg): 150 IP code: IPX3 equivalent Compressor: Fully enclosed DC inverter, rated output 400W Refrigerant: R1234yf Refrigerant charge amount: 620g Power cord length: Approximately 3m Accessories: Padlock

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Applications/Examples of results

You can use it both indoors and outdoors, such as in factories, construction sites, logistics centers, agricultural and outdoor event venues, golf courses, and commercial facilities. It will be installed in the lobby of the Maebashi City Hall (Gunma Prefecture) until the end of September. https://mebuku.city/news/watch/post-60934/

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Company information

KOYAMA

KOYAMA CO., LTD. Head office, Tochigi branch, Tokyo branch, Kawasaki branch, Shizuoka branch, Osaka branch, Nagareyama local office, 4 overseas local companies (the Philippines, Shanghai, Hong Kong, Vietnam)

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Our company is a specialized trading firm that handles a wide range of products related to manufacturing, centered around "screws." We offer not only tools, carts, and standard screw products but also processed and drawing items made of metals, plastics, and harnesses. Additionally, we handle various types of transport robots such as AGVs and AMRs. Since our establishment in 1957, we have been engaged in transactions with many suppliers both domestically and internationally. Our strengths lie in our reliable quality, competitive pricing, and speedy responsiveness. In addition to our headquarters in Tokyo, we have branches in Kawasaki, Tochigi, Shizuoka, Osaka, the Philippines, Vietnam, Shanghai, and Hong Kong, where our sales representatives provide consistent support from quotations to after-sales follow-up. We also have a subsidiary, Tokai Lock Co., Ltd., which specializes in anti-loosening processing for screws. We will provide optimal proposals tailored to your needs, so if you have any issues related to manufacturing, please feel free to contact Koyama Co., Ltd.

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