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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
キーストンインターナショナルlogo
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  • Products/Services(75)
  • catalog(105)
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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.

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Products/Services (75)

IR high-power laser diode product image
IR high-power laser diode
Direct cooling module "ASPEN DRC" product image
Direct cooling module "ASPEN DRC"
Fiber collimator product image
Fiber collimator
Fiber coupler product image
Fiber coupler

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catalog(105)

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LD-PD Corporation Comprehensive Catalog (English Version)

LD-PD Corporation Comprehensive Catalog (English Version)

CATALOG
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Sheaumann Laser Company Comprehensive Catalog (English Version)

Sheaumann Laser Company Comprehensive Catalog (English Version)

CATALOG
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Ultra-compact, maintenance-free direct cooling module.

Ultra-compact, maintenance-free direct cooling module.

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

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

PRODUCT
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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.
Industry Electronic Components and Semiconductors
キーストンインターナショナル Building Image

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