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  1. Home
  2. Electronic Components and Semiconductors
  3. キーストンインターナショナル
Electronic Components and Semiconductors
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キーストンインターナショナル

EstablishmentMarch 30, 1990
capital1000Ten thousand
number of employees5
addressChiba/Kashiwa-shi/Someya Building 1F-A, 1-1-21, Sakasai
phone04-7175-8810
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last updated:Feb 16, 2026
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  • Products/Services(74)
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キーストンインターナショナル Company Overview

Keystone International is the keystone that connects Japan and the world.

Our staff, equipped with specialized skills and marketing capabilities, searches for the latest cutting-edge equipment, including lasers, from around the world to provide to everyone in Japan. We wish to continue walking together with you into the 21st century. This is the wish of Keystone International.

Business Activities

Import and sales of semiconductor lasers, infrared detectors, telecentric lenses, piezo actuators, chillers, heat sinks, optical fibers, precision stages, etc.

Recommended information

Direct cooling module "ASPEN DRC"

Direct cooling module "ASPEN DRC"

No need for cooling water or pumps with DRC method! An ideal cooling solution for equipment integration.

"ASPEN DRC" is a super compact, maintenance-free direct cooling module that directly contacts the refrigerant with the heat source. It eliminates the need for cooling water circulation, significantly reducing components such as pumps, tanks, and piping. This achieves a substantial reduction in the size of the device while also making it maintenance-free, providing high-efficiency and highly stable cooling performance. Since the refrigerant directly contacts the heat source, the heat transfer efficiency is extremely high, delivering significant cooling capacity despite its small size. Custom solutions for OEMs are also available, allowing for customization of cooling capacity, shape, and refrigerant according to device specifications. 【Features】 ■ Elimination of cooling water circulation allows for significant downsizing ■ Zero issues with water quality management, pump replacement, or pipe clogs ■ High heat transfer efficiency achieved by direct contact of refrigerant with the heat source ■ Easy integration into devices, enhancing design flexibility ■ Custom solutions available for OEMs *For more details, please refer to the related links or feel free to contact us.

Products/Services (74)

Direct cooling module "ASPEN DRC" product image
Direct cooling module "ASPEN DRC"
Fiber collimator product image
Fiber collimator
Fiber coupler product image
Fiber coupler
Infrared region PD (detector) product image
Infrared region PD (detector)

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catalog(103)

Survey responses are required to view e-book details. Click to view the e-book.

Ultra-compact, maintenance-free direct cooling module.

Ultra-compact, maintenance-free direct cooling module.

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Nanoplus high-power FP laser: 1950–2350nm (1W)

Nanoplus high-power FP laser: 1950–2350nm (1W)

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nanoplus FP Laser: 2800–6500nm

nanoplus FP Laser: 2800–6500nm

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nanoplus FP Laser: 2400–2900nm

nanoplus FP Laser: 2400–2900nm

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news(1)

DRC_system.jpg

Notice of Participation in OPIE '26 (OPTICS PHOTONICS International Exhibition 2026) from April 22 (Wednesday) to April 24 (Friday), 2026.

  • SEMINAR_EVENT

Keystone International Co., Ltd. will be exhibiting at the "OPIE '26 (OPTICS PHOTONICS International Exhibition 2026)" held at Pacifico Yokohama. This exhibition is one of Japan's largest specialized trade shows, held every April, gathering cutting-edge technologies and products in the fields of optical technology and photonics. A wide range of technologies and products, including optical elements, lasers, infrared and ultraviolet technologies, and optical design, will be showcased, facilitating active exchanges among industry, academia, and research. With numerous exhibitors participating from both domestic and international markets, and with new product announcements and demonstrations, the event is also attracting attention as a venue for business negotiations and technical partnerships. We look forward to your visit.

Mar 31, 2026

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Detailed information

Company name キーストンインターナショナル
number of employees5
Contact addresspostalcode 277-0042 Chiba/ Kashiwa-shi/ Someya Building 1F-A, 1-1-21, SakasaiView on map TEL:04-7175-8810 FAX:04-7175-5669
Key PartnersGovernment offices, national and public universities, private universities, NEC Corporation, Canon Inc., Shimadzu Corporation, Sony Corporation, NGK Insulators, Ltd., Japan Signal Co., Ltd., Japan Spectroscopic Co., Ltd., Spectroscopic Instruments Co., Ltd., Hokuto Electric Co., Ltd., Mitutoyo Corporation, Omron Laser Front Co., Ltd., Gigaphoton Inc., Fuji Industries Co., Ltd., Hitachi, Ltd., Hitachi High-Technologies Corporation, Rion Co., Ltd., Takenaka Electronic Industrial Co., Ltd., Futaba Electric Co., Ltd., Hamamatsu Photonics K.K., Japan Electric Measuring Instruments Co., Ltd., Toshiba Corporation, Fujifilm Corporation.
Business LocationsClick here for the list
Industry Electronic Components and Semiconductors
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