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Responding to various requirements of parts processing, Precision grinding wheels of custom made quality

Hiroyuki Uchiyama
Sales Director

About Mitsui grinding wheel

"We want to domesticize grinding wheels for industrial use." Based on this idea, we started manufacturing artificial abrasives in 1913 for the first time in Japan. Since then, from the appearance of double disk grinders using general grindstone, to today's CBN · DIA wheels, we are always at the forefront in the field of precision grinding wheels. We have earned high praise in parts processing fields such as automobiles, bearings, precision machinery and electric machinery in Japan and abroad. In 1994, we established Mitsui Grinding Technology (MGT), an overseas business base in Thailand, to respond to the request of customers who were located in the ASEAN region that "want to use Japan's grindstones, which can be used safely even at overseas factories."

Strengths of Mitsui Grinding Technology (MGT)

~ Integrated system between Japan and Thailand & Long-time mutual trust ~
Our strength is that we can respond flexibly and promptly to customers' improvement requests and changes in the environment at the site to be used, with a structure in which the R & D department in Japan’s and Thailand's manufacturing technology and evaluation testing functions are linked together.

Handle a wide variety of demands. Monthly production is 300 tons

Our grinding wheels are tailor-made according to a customer's facility and workpiece specifications. Engineers will propose the optimum grinding stone specifications for various demands of the processing site, and we provide a technical service follow-up until the customer can use the grinding wheels without problems. The products we handle range in weight from 500 grams to 200 kilograms, with various specifications, and now the monthly production amount is around 300 tons.

Mitsui Grinding Technology

Achieving many years of trust in Thailand

Our company has been supplying grinding wheels for over 20 years in Thailand. Currently, more than 200 employees work at MGT. We educate and train technical service personnel who visit customer’s factories to respond to their processing requirements. Also, development of grinding wheels takes time and labor, but we are emboldened by our own high technical ability and manufacturing factory strength. MGT is also characterized with its stable products based on Japanese-quality control and delivery by the promised due date.

Mitsui Grinding Technology

Future initiatives

Today, our products are expanding to new fields other than transportation equipment, such as aerospace, medical, and food equipment and new functional materials. MGT will actively respond to customers' requests in an aggressive effort to develop new technologies and products in the future.

Inquiry Form

Please feel free to contact us from the form as below.

We accept by phone and email.

KOA-SHA (THAILAND) (hereinafter referred to as the "Company" or "We"), in the variety of services provided by the Company (hereinafter referred to as the "Services"), established the following privacy policy (hereinafter referred to as the "Policy").

Definition of Personal Information

The term "Personal Information" as used in this Policy, means information about a living individual which can identify the specific individual, including name, date of birth, and other descriptions (including other information that can be easily matched to identify a specific individual).

Acquisition of Personal Information

We acquire personal information by legally fair means.

Use of Personal Information

The Company shall use personal information for the purpose of business as necessary within the scope of the following.

  • To deliver optimized information to the individual user of the Service.
  • To help improve the quality of the Service by statistical analysis.
  • In response to inquiry in regard to the Service.
  • To conduct questionnaires regarding the Service.
  • To send information regarding campaigns and new products by the Company.
  • Other purposes associated with the abovementioned purposes of use.
About cookies

The Company makes use of cookies on the Service website. In addition, cookies may be used in a portion of the advertising system. A cookie is a small amount of data regarding usage history that is sent to your browser from a website’s server and is stored on the user’s hard drive. If the user prefers the Company not to make use of cookies, the user can set their browser to reject cookies. However, if the cookies are rejected, there is a possibility that the use of the Service on the website will be affected.

Provision of Information to Third Parties

The Company will not provide personal information to any third party without obtaining prior consent by the individual concerned, except as required by applicable laws and regulations.

In addition, the Company may access personal information and disclose it to third parties in the following cases.

  • Under Prior Consent of the Individual User Concerned
  • When the disclosure of personal information is required by law or judicial court, judicial orders, decisions and instructions based on laws and regulations of government agencies.
  • When reasonable measures are necessary to defend the rights or property of the Company.
  • When the disclosure of personal information is necessary to protect the lives, bodies or property of the Company, user(s), or public, and it is difficult to obtain the individual’s consent at the time.
  • When cooperation is necessary with a national or local government organization, or a business operator entrusted by such an organization in executing affairs under laws and regulations, and in which obtaining the consent of the user(s) is likely to impede the execution of the affairs.
  • In statistical data in which the disclosure or provision does not identify the user’s identity.
Management of Personal Information
  • The Company will maintain the accuracy of personal information and manage it safely.
  • The Company will take appropriate security measures to prevent the loss, destruction, tampering or leakage of personal information.
  • The Company will take precautionary measures against the loss, destruction, tampering, and leakage of personal information through appropriate system maintenance of the operating system and education of employees.
Request for Notification, Disclosure, Correction, Suspension of Use of Personal Information

In the case the Company receives request from the individual user regarding the disclosure, correction, addition, deletion, suspension of use, or erasure of personal information, stoppage of use by a third party or notification of use, after confirmation that the requester is the individual user, the Company will respond without delay in accordance with the Personal Data Protection Act.

Note that in the case that the request does not meet the requirements stipulated by the Personal Data Protection Act, or the reason to reject such request is permitted by the Personal Data Protection Act or other laws and regulations, the request may not be fulfilled.

In addition, there is no payment required or fees associated with the request for disclosure by the individual user. However, the cost of communication from the individual user to the Company, transportation expenses, and expenses associated with the preparation of materials for the purposes of individual identification will be the responsibility of the individual user.

Revision of Privacy Policy

The Company will review the operational status of the handling of personal information and make efforts for continuous improvement, and may change the Policy as necessary. After such changes to the Policy, the Policy will be published on the Company’s website.


Please address inquiries regarding the Company’s use of personal information to

Established October 01, 2021

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