Company Profile

Company name SEIWA KOGYO Co., LTD.
Capital 30 million yen
Date founded February 21, 1969
Company address 957-7 Kawamukoh-cho, Tsuzuki-ku,
Yokohama, Kanagawa, 224-0044  Japan
TEL/FAX +81-45-471-4700 / +81-45-471-4701
URL http://www.seiwa-inc.com/
EMail mailto:honsya@seiwa-inc.com
Site area 660m²
factory area 1400m²
Number of employees 25 (as of April, 2011)
Executives Chairman and Representative Director : Kaoru Kuriyano
President and Representative Director : Nobuki Kuriyano
Business activities ・Applied technology of Photo catalyst by Industry-University joint development for the environment improvement, and the development of the maintenance equipments.
・Manufacturing and Distribution of Hydraulic equipments and Hydraulic systems.
Correspondent financial institution The Johnan Shinkin Bank
The Yokohama Shinkin Bank
Mizuho Financial Strategy, Co. Ltd.
The Shoko Chukin Bank, Ltd.
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Main business partners
(random order/honorific titles are omitted)

Industrial machine
FE Engineering Corporation/TOSHIBA/ Hitachi, Ltd./ Mitsubishi Heavy Industries, Ltd./ Daikin Industries, Ltd./ Kawasaki Trading Co., Ltd / NACHI-FUJIKOSHI CORP./ IHI Corporation/ Kayaba Manufacturing Co., Ltd./Uchida hydraulic equipment / Kawasaki Heavy Industries, Ltd/Kamome Propeller Co., Ltd/The Japan steel works, LTD./ TOKYO SANGYO CO,.LTD./AIDA ENGINEERING, LTD./ Yuken Kogyo Co., Ltd./ G-NET CORPORATION/Nikkato/Chuo Seiko Co.,Ltd./ other major equipment makers.

Main business partners
(random order/honorific titles are omitted)

Environmental equipment
Official Residence of the Prime Minister, Narita airport, National Institute of Infectious Diseases, The National Institute of Advanced Industrial Science and Technology, Kyushu University, Miyazaki University, Tsukuba University, Nagoya City University, Kitasato University, JAL, NEC, JR Tokai, Others (Care centers, Care facilities, Food-related companies)

盛和工業株式会社

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Main services

Machine Equipment Department
  1. Supply for the development facilities for the space development
  2. The carriage of hydraulic system for the tunnel boring machine.
  3. A wide variety of Testing machine
  4. General industrial machinery
  5. The production of the hydraulic source for the press machine
  6. Excavator for the construction
  7. Hydraulic system for large-size industrial machines


All the processes from the design to production are done by SEIWA. We also handle a wide array of services including a customized product.

Environmental Equipment
  1. Photo catalyst-related products
  2. Photo catalytic filter
  3. Environmental Cleanup System with photo catalyst
  • The product which has received the 18th Industrial technical development award in Kanagawa prefecture and the areal environmental technology award
  • The product which was awarded prizes of the 31st environmental award and leading company award of The HITACHI environmental foundation and Daily Industrial newspaper for the development of photo catalyst
  • The products were identified as an environmental department of SBIR.
  • 2007~ We have joined in “Project to Create Photo catalyst Industry for Recycling-oriented Society” of NEDO.

機械装置部 機械装置部
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