President’s Message


Masaaki Tsurui

Toward the world’s best research support company

 We started as a specialized specimen manufacturer and have since expanded the scope of service to materials testing and chemical analysis. On August 1, 2015, the three group companies, Kobe Material Testing Laboratory, Co., Ltd., Minatogawa Kinzoku Test Piece Manufacturing Co., Ltd., and Tsurui Chemical, Co., Ltd., were put together to make a great leap forward into a total testing, research, and analysis laboratory.

 Since our beginning in 1947, we have worked on challenges and solutions in a wide range of fields and accumulated our technology and know-how for more than 70 years. It is our pride that we have technically supported Japan’s core industries—aerospace, energy, automobile, and life sciences.

 Increasingly competitive global markets demand manufacturing companies enhance their technology and new product development capabilities. In this accelerating technological innovation, KMTL will make a difference in society by exploring the world of materials from various aspects and supporting your research activities.

 Based on our three pillars of excellence―world-recognized quality assurance system, integrated traceable testing system, and independent third party laboratory, and our mission―to delight and inspire customers by providing the most reliable data in the world and make a difference in society, we move forward to be the world’s best research support company.

 We look forward to your continuing support and cooperation.


Company Profile

Corporate Name Kobe Material Testing Laboratory Co., Ltd.
Address 675-0155
47-13 Niijima, Harima-cho Kako-gun, Hyogo
TEL 079 – 435 – 5010
FAX 079 – 435 – 5335
Established March 1950
President Masaaki Tsurui
Capital 50 million yen
Employees 434 (as of April 2024)
Business Activities Test specimen preparation
Design and manufacture of test specimens
Design and manufacture of special testing equipment
Strength testing and analysis
Metallographic examination and evaluation
Soundness/residual life evaluation of structures and members
Dispatch of engineers for research and development
Chemical and instrumental analysis
Physical properties and morphology analysis
Water control and corrosion testing for power plants
Environmental measurement
Main Customers
Technical Research And Development Institute (TRDI) Ministry of Defense
Japan Aerospace Exploration Agency (JAXA)※
Japan Science and Technology Agency (JST)※
Korea Institute of Industrial Technology (KITECH)
National Institute of Advanced Industrial Science and Technology (AIST)※
Japan Atomic Energy Agency (JAEA)※
National Institutes for Quantum and Radiological Science and Technology (QST)※
National Institute for Materials Science (NIMS)※
Hyogo Prefectural Institute of Technology
Central Research Institute of Electric Power Industry (CRIEPI)
Railway Technical Research Institute
IHI Corporation
Aisin Seiki Co., Ltd.
Isuzu Motors Limited
Kawasaki Heavy Industries, Ltd.
Korea Electric Power Corporation (KEPCO)
The Kansai Electric Power Co., Inc.
Kyushu Electric Power Co., Inc.
Caterpillar Japan Ltd.
Institute of Nuclear Safety System, Incorporated (INSS)
Kobe Steel,Ltd.
Suzuki Motor Corporation
Sumitomo Heavy Industries, Ltd.
Daido Steel Co., Ltd
Daihatsu Motor Co., Ltd.
The Chugoku Electric Power Co., Inc.
CHUBU Electric Power Co., Inc.
Denso Corporation
Tokyo Electric Power Company, Incorporated (TEPCO)
Toshiba Corporation
Tohoku Electric Power Co.,Inc.
Doosan Heavy Industries &
Construction Doosan Infracore Co., Ltd.
Toyota Motor Corporation
Toyota Tsusho Corporation
Nissan Motor Co., Ltd.
The Japan Steel Works, Ltd.
Panasonic Corporation
Hitachi-GE Nuclear Energy, Ltd.
Hitachi, Ltd.
Hitachi Zosen Corporation
Hino Motors, Ltd.
Fuji Heavy Industries Ltd.
Fuji Electric Co., Ltd.
Honda R&D Co.,Ltd.
Mitsubishi Motors Corporation
Mitsubishi Heavy Industries, Ltd.
Mitsubishi Electric Corporation
Mitsubishi Heavy Industries Machinery Systems, Ltd.
Mitsubishi Power, Ltd.
Hitachi Metals Ltd.
Hitachi Power Solutions Co., Ltd.
UACJ Corporation
Osaka University
Kagoshima University
Kyushu University
Kyoto University
Kobe University
Chiba Institute of Technology
The University of Tokyo
Tohoku University
University of Hyogo
University of Fukui
Muroran Institute of Technology
Ritsumeikan University

※: National Research and Development Agency



1947 Founded Tsurui-Shouten in Nagata, Kobe city.
1950 Established Minatogawa Kinzoku Company in Nagata, Kobe city as a limited-liability company.
1961 Reorganized into Minatogawa Kinzoku Test Piece Manufacturing Co., Ltd.
1963 Opened Tsuchiyama Factory in Harima-cho, Kako-gun, Hyogo-pref.
1967 Started subcontracted material-testing.
1968 Separated material testing businesses to establish Kobe Material Testing Laboratory Co., Ltd.
1979 Opened a laboratory in Niijima, Harima-cho, Kako-gun
1980 Obtained Grade A qualification of Technical Research & Development Institute Ministry of Defense, and started subcontracted test-piece machining.
1981 Developed an extra-large electric-discharge cutting machine jointly with Sankyo Engineering Co.,Ltd. (The first domestic production)
1985 Established Tsurui Chemical Co., Ltd to expand into the chemical field.
Built the monument for specimens at Niijima site.
1986 Established Machinery Dept and manufactured nuclear-fuel-rod transferring and moving equipment.
1987 Opened Tokyo Sales Office in Tokyo, Ueno.
1990 Opened Ibaraki Workshop and Ibaraki Office in Tome-cho, Hitachi-city, Ibaraki-pref.
1994 Registered by General Electric Company as an approved independent laboratory.
1995 Completed a machining shop at Ibaraki Workshop and started machining operations.
1996 Certified to ISO 9002 as the first testing laboratory in Japan.
1998 Accredited to ISO/IEC 17025 (JAB) as the first independent commercial laboratory in Japan.
1999 Accredited to ISO/IEC 17025 (JNLA) under Industrial Standardization Act.
2001 Expanded the accreditation scope of ISO/IEC 17025 to include rubber and plastics.
2002 Certified to ISO 9001
2002 Opened Nagoya Sales Office in Nagoya-city, Aichi-pref.
Licensed as a medical device manufacturer (License No. 28BZ6006)
2004 Moved Tokyo Sales Office to Higashiueno, Taito-ku, Tokyo.
2005 Certified to JIS Q 9100 (quality management systems standard for the aerospace industry).
2006 Accredited to Nadcap in material testing as the first material testing laboratory in Japan.
2007 The 60th anniversary of the foundation.
Licensed as a medical-device first-class marketing authorization holder (License No. 28B1X00013)
2008 Established KMTL Edge Tech CO., LTD.
Received capital increase from Osaka Small and Medium Business Investment & Consultation Co.,Ltd.(SBIC West Japan).
Established Synchrotron Analysis LLC as a limited liability company to start business in synchrotron radiation analysis.
2010 The 25th anniversary of Tsurui Chemical Co., Ltd.
The 20th anniversary of Ibaraki Workshop/Office.
2011 Tsurui Chemical Co., Ltd. certified to ISO 9001.
2012 Reapproved to GE S-400, GE Transportation Aviation Special Process Certification (material testing).
2015 Opened Kyushu Sales Office in Hakata-ku, Fukuoka-city.
Approved by Boeing as a D1-4426 approved process source.
Started as new Kobe Material Testing Laboratory Co., Ltd. that incorporated Kobe Material Testing Laboratory Co., Ltd., Minatogawa Test Piece Manufacturing Co., Ltd., and Tsurui Chemical Co., Ltd.
2017 The 70th anniversary of the foundation.
Obtained Nadcap (Non Metallic Materials Testing–Mechanical Testing) accreditation.
Opened Hitachi Minami Factory of Ibaraki Workshop in Tome-cho Hitachi, Ibaraki Pref.
2019 Authorized by Pratt & Whitney as an commercial material testing laboratory
2020 The 30th anniversary of Ibaraki Workshop
2024 Merged with Nihon Techno-Plus Corp.(NTP)


Sales Offices

Sales Department Kobe Sales Office

47-13 Niijima, Harima-cho Kako-gun, Hyogo 675-0155
TEL: 079-435-5010 / FAX: 079-435-5335

Tokyo Sales Office

7-12-13 Ueno Taito-ku, Tokyo 110-0005
KYOWA Building 8F
TEL: 03-3843-5691 / FAX: 03-3843-5690

Ibaraki Sales Office

1270-60 Tome-cho Hitachi, Ibaraki 319-1231
Hitachi Nanbu Industrial Park
TEL: 0294-28-0112 / FAX: 0294-53-8156

Nagoya Sales Office

1-1802 Kamiyashiro, Meito-ku Nagoya, Aichi 465-0025
TEL: 052-799-6850 / FAX: 052-799-6851

Kyushu Sales Office(Inside the Kobe Sales Office)

TEL: 079-435-5010 / FAX: 079-435-5335


Service Offices

-Harima area-

Harima Workshop

47-13 Niijima, Harima-cho Kako-gun, Hyogo 675-0155
TEL: 079-435-5010 / FAX: 079-435-5335

Tsuchiyama Factory

1-12-2 Kitanozoe, Harima-cho Kako-gun, Hyogo 675-0158
TEL: 078-943-0370 / FAX: 078-949-3811

Takasago District

Chemical Test Department

2-1-1 Shinhama, Arai-cho Takasago, Hyogo 676-8686
c/o Mitsubishi Heavy Industries Research & Innovation Center
TEL: 079-443-0716 / FAX: 079-442-7087

-Ibaraki area-

Hitachi Minami Laboratory, Ibaraki Workshop

Hitachi Nanbu Industrial Park 1270-60 Tome-cho Hitachi, Ibaraki 319-1231
TEL: 0294-53-9111 / FAX: 0294-53-2500

Hitachi Minami Factory, Ibaraki Workshop

Hitachi Minami Industrial Park 1270-16 Tome-cho Hitachi, Ibaraki 319-1231
TEL: 0294-53-2502 / FAX: 0294-53-9388

-Other area-

Open Laboratory at Tokyo Sales Office

7-12-13 Ueno Taito-ku, Tokyo 110-0005 KYOWA Building 8F
TEL: 03-3843-5691 / FAX: 03-3843-5690

Tohoku University Satellite Laboratory

6-6-04 Aramaki Aza Aoba, Aoba-ku, Sendai, Miyagi 980-857


Group Companies

KMTL Edge Tech Co., Ltd.

A proficiency testing provider. KMTL Edge Tech is backed by technical expertise developed in Kobe Material Testing Laboratory Co, Ltd.—machining, testing, analysis, and evaluation.


The only company in the world specializing in synchrotron radiation analysis. It utilizes the industrial analysis beamline BL05 at the NewSUBARU synchrotron radiation facility of Laboratory of Advanced Science and Technology for Industry (LASTI) at University of Hyogo. The extremely high brightness of synchrotron radiation extracts X-rays in a wide range. ALSY-ONE LLC provides chemical state analysis services that is available only with synchrotron radiation.




Cetim, the French Technical Center for Mechanical Industries, is the largest national research institute in in France. They provide comprehensive array of services to the worldwide industries, especially aerospace, automotive, transportation, energy, and medicine. Their services include failure analysis of products and materials, mechanical testing, NDT, design support, and consulting.


EMIC CORPORATION has a top-class delivery record of vibration testing systems and combined testing systems in Japan. They provide comprehensive solution services for vibration and environmental testing at lab centers in Japan, including Hyogo Test Lab Center located in KMTL Harima Workshop, and worldwide.


CLEARIZE Co., Ltd. is specialized in contract analysis services. They mainly provide instrumental analysis—chemical analysis, property evaluation, structural analysis, mechanical testing, corrosion testing, NDT and a wide range of contract testing services.