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Leader Database

Motohiro Yaji


President and Representative Director

Company Name

Sanshin Manufacturing Co.


Social Media:

face book アカウント Sanshin high technology Thailand

旧Twitter)アカウント Sanshin Manufacturing Co.

Birth Date: 



B.A. in Economics, Sophia University, Tokyo


Born on February 5, 1968

1990 Graduated from Sophia University, Department of Economics

1990-1991: Studied abroad at University of Washinton (Seattle)

1991 Joined Sanshin Seisakusho Co.

1995 Director and General Manager of Sales Department

2003 Senior Managing Director

2004 President of Sanshin high technology Thailand ltd (current position)

2008 Director and Vice President of Sanshin Manufacturing Co.

2009 President and Representative Director of Sanshin Manufacturing Co.

Areas of Expertise

Manufacturing, quality control, production control, and sales in the stamping and sheet metal processing industry. 

What have been the main lessons you have learned in your career and how do you implement them in your management?

In 2003, during my predecessor's time, we closed one of our factories due to poor performance. At that time, we had to restructure most of the employees working at that factory. Realizing the limitations of top-down, one-man management, we shifted to a management style that focused on the well-being of employees. The current management model of our company has been created in which employees can feel their own growth through their work and the company grows along with their growth.

Profesional accomplishments

We have established a method for manufacturing molds with ultimate reduction of friction force with emphasis on durability.

We have a system that enables vertical start-up (smoothly and without problems) from product order to prototype and mass production.


Being a president is a lonely business. I have been thinking and making decisions by myself. However, recently, my subordinates have been growing remarkably, and I have learned from them. My current mentors may be my subordinates who have been working hard together with me.

Goals as president

I believe that I have only 10 to 15 years left as president. What I would like to challenge is to develop products with higher added value. I would like to move beyond the category of parts processing to manufacturing products that are closer to finished products. By taking on the challenge of value-added and more difficult products, we hope to further improve our business performance and lead our employees to further growth and success. We would like to further evolve our improvement activities, which is our specialty, and take on the challenge of developing convenient goods and in-house products that can be utilized in factories.


I have several mottos.

Hate the sin, hate the man. (Even if a problem occurs, no one intentionally causes it. Instead of blaming the person who did it, we should investigate the cause of the problem and try to prevent recurrence.)

The president should be the director and cheerleader. (This is a phrase I came up with. (This is a phrase that I came up with. After deciding on a policy, the president comes off the bench and goes to the bleachers to cheer on the employees fighting on the field with all their might.)

Keep doing what is obvious to everyone and you will become special. (Even if there is only one excellent person, one person is still one person. Even an ordinary person can achieve great things if everyone sticks to the basics and does them day in and day out.)