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Contribution We contribute to society by improving the quality of our work through our sincere efforts and creativity.


Development We strengthen our corporate structure and strive to achieve the sustainable development of the company.


Satisfaction We aim to be a satisfying company to work for.


Contribute to societythrough our business

Since its establishment 75 years ago, Sanko Co., Ltd., has been concentrating the collective efforts of all its employees under a management philosophy of “contributing to society through our businesses.” As a distributor and a manufacturer of chemicals, we have always aimed to build a corporate structure that responds quickly to the needs of society.
We have recently introduced a business division system more effectively to respond to the accelerating changes in the global economy. This new system integrates research, manufacturing and sales in order to further strengthen our initiatives aimed at developing new markets, improving the functionality of our products, and reducing costs. We are also committed to improving our corporate value and fulfilling our social responsibility by making company-wide improvements in quality control.
We look forward to your continued guidance and encouragement.

President and Chief Executive OfficerTAKAKI Yoshiyuki


Board member

President and Chief
Executive Officer
TAKAKI Yoshiyuki
Director, Senior Managing
Executive Officer
TSUNOMACHI HirokiGeneral Manager, Production Center
Director, Managing Executive OfficerKISHIMOTO DaishiroGeneral Manager, Research and Development
Director, Managing Executive OfficerYAMAGUCHI KazuhitoGeneral Manager, Operations Division
Director, Senior Executive OfficerOSHIMA ShujiGeneral Manager, Sales & Chemical Division
External DirectorOGAWA DaisukeHonorary Advisor, Daicel Co., Ltd.
External DirectorTANI MasaakiSpecial Advisor, The Bank of Fukuoka, Ltd.
AuditorYANO Masahiko
Managing Executive OfficerNASU TakahiroPresident and Representative Director, SANKO MEDIC Co., Ltd.
Senior Executive OfficerISHIBASHI TakeshiDeputy General Manager,
Production Center
Executive OfficerSUMITOMO HiroshiGeneral Manager, Laboratory
Executive OfficerADACHI YojiGeneral Manager, Functional Polymer Materials Division
Executive OfficerTAKASHIMA Masahiro General Manager, Kyushu Division
Executive OfficerMORI TakaakiGeneral Manager, Shiga Factory



Company name
SANKO Co., Ltd.
President and Chief Executive Officer
TAKAKI Yoshiyuki
June 1946
386,400,000 JPY
Quattro Muromachi Building 3rd Floor, 4-1-6 Nihonbashi-Muromachi, Chuo-ku, Tokyo, 103-0022,Japan
Head Office
8-16 Torimachi, Kurume City, Fukuoka,830-0018 Japan
Number of employees
TEL:+81-3-5204-0571 FAX:+81-3-5204-0470
The Bank of Fukuoka, Ltd.
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Mizuho Bank, Ltd.
MUFJ Bank, Ltd.
Sumitomo Mitsui Banking Corporation
Business Areas

Manufacturing Division
Manufacturing of phenol derivatives, cyclic phosphorus compounds, and other compounds

Distributing Division
Chemical Products Division: Contract manufacturing of organic compounds, purchasing and sales of industrial chemical products
Sole agent for Proviron. Agent for Lianyungang Taile Chemical Industry Co., Ltd.
Synthetic Polymer Division: Purchasing and sales of synthetic polymer raw materials and products