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Company Data

P.R.A. was founded in January, 2004, since then we have been doing business with large companies as a leading company in manufacturing, repairing and updating semiconductor manufacturing equipment.

Using professional engineering capability, we are working on prolonging the life and upgrading efficiency of semiconductor manufacturing equipment which operates in our client’s factories.

P.R.A. provides in house repair services of various RF products, including Comdel RF generators. We also provide customers technical solutions, such as optimization and upgrade of parts, to enhance product reliability.

Company’s Profile

Company name	P.R.A. Co.,Ltd.（Plasma Related Alliance）
Established in	19th January, 2004
Capital	10 million yen
Top management	Yoshikiyo Tobe
Head Office	8-33-3 Minoridai, Matsudo-shi, Chiba 270-2231 TEL：047-369-3389　FAX：047-369-3317 mail：
Second factory	6-6-10 Minoridai, Matsudo-shi, Chiba 270-2231 TEL：047-393-8037　FAX：047-393-8068
Osaka office	#1 Shinobugaoka-mansion, 1-6-31 Takakura, Neyagawa-shi, Osaka 572-0864 TEL：072-803-7595　FAX：072-803-7596
Kyushu office	#103 Grace-terrace, 2601-4 Kubota, Kikuyomachi, Kikuchigun, Kumamoto 869-1103 TEL：096-285-7289　FAX：096-285-7290
Nagoya office	#1 Ai-Building, 1-4-7 Jyosai, Nishi-ku, Nagoya-shi, Aichi 451-0031 TEL：052-715-9135　FAX：052-715-9136
Employees	37名
Business	Design and manufacture peripheral equipments of semiconductor. Repair DC, RF generators. Upgrade specs of matching network, generators, and so on.

Corporate History

January, 2004	P.R.A. established. simultaneously signed an agency agreement with Comdel Inc.
November, 2010	Sendai office established.
February, 2011	Kyushu office established.
July, 2011	Chiba head office ISO9001-2008 certified.
April, 2012	Chiba head office building relocated.
August, 2012	Osaka S.C. established.
December, 2015	経営革新計画(Innovation management plan) was approved.
July, 2016	ものづくり補助金(manufacturing subsidy) in 2015 was approved. Theme : Matching network development.
July, 2016	ちば元気づくり助成事業(Chiba genki-dukuri subsidy) in 2016. Theme : Electrotatick chuck(ESC) power supply development.
September, 2016	Due to business expansion, Second Factory established near Chiba head office.
February, 2017	Public Interest Incorporated Foundation “Himawari venture fund” was approved.
April, 2017	ものづくり補助金(manufacturing subsidy) in 2016 was approved. Theme : Building a mass production system of original products.
June, 2017	ちば元気づくり助成事業(Chiba genki-dukuri subsidy) in 2017. Theme : .Exhibition to SEMICON JAPAN 2017.
October, 2017	Nagoya office established.
January, 2018	千葉ものづくり認定製品(Chiba manufacturing qualified product) in 2017 was approved.
May, 2019	Osaka office relocated.
October, 2021	Nagoya office relocated.
March, 2022	Increased capital to 20 million yen.
April, 2024	Became a subsidiary of Kanematsu PWS Ltd.
May, 2024	Changed Representative Director. Katsumi Sakamoto, Representative Director, appointed as Director CTO. Takashi Ikehata, Director, appointed as Representative Director.
January, 2025	Changed Representative Director. Takashi Ikehata, Representative Director, resigned. Yoshikiyo Tobe, Director, appointed as Representative Director.

Main Customer

Japan Semiconductor Corporation
Renesas Semiconductor Manufacturing Co., Ltd.
Sony Semiconductor Manufacturing Corporation
Texas Instruments Japan Limited
Kioxia Corporation
TowerJazz Panasonic Semiconductor Co.,Ltd.
SEIKO EPSON CORPORATION
LAPIS Semiconductor Co., Ltd.
ROHM Co., Ltd.
PHENITEC SEMICONDUCTOR Corp.
SUMCO CORPORATION
TOSHIBA Electronic Devices & Storage Corporation
Kaga TOSHIBA Electronics Corporation
Micron Technology, Inc.
Sharp Corporation
ON Semiconductor AIzu Co.,Ltd.
DENSO
Japan Display Inc.
DISCO Corporation
Asahi Kasei Microdevices Corp.
Mitsubishi Electric Corporation

Quality Policy

(1) We offer services of the maintenance of semiconductor manufacturing equipment with the motto of high-quality, fair price and quick turn.
(2) We continuously improve the efficacy of QMS to achieve our quality policy. We strive for the development and prosperity of an organization and contribute to society.
(3) We comply with laws and try to differentiate ourselves by improving our technology.

Top Message

【Plasma Solutions: Pioneering the Future Through Trust and Innovation】

As a leading company manufacturing and repairing semiconductor and plasma manufacturing equipment and peripheral devices, we have consistently pursued cutting-edge technology.

Guided by our motto, “Not just product repair, but providing ‘upgrades’,” we focus not merely on addressing failure symptoms but on resolving root causes to extend product lifespans, thereby contributing to our customers’ cost reduction. This approach has earned high praise from many clients.

Leveraging our accumulated knowledge and expertise, we are also engaged in the development and manufacturing of high-quality phase shifters, ESC power supplies, and matchers. We intend to further strengthen our capabilities in these areas going forward.

Utilizing our comprehensive knowledge and technology in plasma applications, electricity, vacuum, and software, we will continue to take on new challenges daily as a total plasma solutions provider, united as one team.

While cherishing our long-standing corporate ethos of “sincerity, consideration, and gratitude,” we will build trusting relationships with our customers and contribute to society.