Terms of Use

This website is operated by NGK Chemitech, Ltd. (“NGK Chemitech” hereinafter). Carefully read the Terms and Conditions of Use set forth below before using this website. If you do not agree with these terms, please refrain from using this website.

NGK Chemitech reserves the right to amend the following Terms and Conditions of Use. Please review the latest updates periodically. Use of this website following any amendment of the Terms and Conditions of Use constitutes consent to such amendments. If any part of the Terms and Conditions of Use is found to be invalid, in violation of laws or regulations, or otherwise inapplicable, all other Terms and Conditions of Use shall remain applicable and binding.

Use of this website

Actions that result in or are likely to result in disadvantage or harm to any third party or to NGK Chemitech, actions inconsistent with societal norms and public standards, and any use of this website for commercial gain are strictly prohibited.


The information on this website (i.e., textual information as well as logos, illustrations, audio, images, and the website design and layout, etc.) is protected by copyright law in each country and by related conventions and laws. Any unauthorized reuse (including duplication, plagiarism, modification, redistribution, or rebroadcast) of such information beyond the extent allowed for personal use or for other uses permitted under copyright law without the express consent of NGK Chemitech is strictly prohibited.

Copyrights to the KUROKO character appearing on this website as NGK Insulators, Ltd. (“NGK” hereinafter)’s advertising character belong to NGK and to TYO Inc., Dwarf Division.
© NGK, kero/dwarf


The NGK Chemitech and NGK names and logos, NGK Chemitech product names, and other names used on this website are the trademarks or registered trademarks of NGK Chemitech or NGK (including those used under license from other companies). Other product and company names occurring on this website are the property of the respective trademark owners. Any unauthorized use (including duplication, plagiarism, modification, redistribution, or rebroadcast) of the trademarks and registered trademarks used on this website is strictly prohibited.

Handling of personal information

Personal information collected through this website is handled in accordance with the NGK Group Privacy Policy. Click here to view the Privacy Policy. This website handles personal information as described below.

  • This website uses Secure Sockets Layer (SSL) encryption to protect users’ personal information. To prevent leakage, misuse, or unauthorized alteration of personal information through improper access by third parties, this website employs firewalls, antivirus technologies, and other practical security measures.
  • This website uses cookies to enable more convenient services for users. Information contained in cookies, such as records of pages viewed by users, is anonymous and cannot be used to identify specific individuals. Users may change their browser settings to refuse to accept cookies. For more information concerning the use of cookies, see the Cookie Policy.
  • This website records information on users in access logs. Access logs contain records of information such as IP address, type of browser and operating system, and date and time of access. This information cannot be used to determine a user’s identity.

Linking to this website

Please use Contact Us to request NGK Chemitech’s permission before linking to this website.

Handling of linked websites

The content of websites operated by third parties linked from or to this website (“linked websites” hereinafter) is managed by the respective companies. When using linked websites, please comply with the terms and conditions of use, copyrights, and other provisions of each website. NGK Chemitech rejects any and all liability for the content of linked websites or for any damages arising from use of such websites.

Proposals from users

Except when actively seeking proposals from customers, NGK Chemitech does not accept any ideas submitted by users through the Contact Us form or other features of this website with regard to technical matters, sales, products, or other topics. We ask for the understanding of our users in this matter.
NGK Chemitech rejects any obligation or liability concerning confidentiality, evaluations, payment, or other aspects of any user proposals.


NGK Chemitech employs the utmost care in posting information to this website. Nevertheless, it provides no guarantees regarding the accuracy, security (including freedom from the interruption or suspension of services or features provided on this website, absence of errors, corrections of errors, or the absence, on this website and its servers, of computer viruses or other harmful content), suitability for specific purposes, or the legality of such information.

NGK Chemitech shall not be liable for any damages resulting from access to or use of this website.

Recommended browsers

We recommend the following environments for optimal functionality and the best viewing experience:

  • Microsoft Edge, latest version
  • Google Chrome, latest version
  • Mozilla Firefox, latest version
  • Safari, latest version
  • Google Chrome, latest version
  • Mozilla Firefox, latest version
  • iOS 12.0 or higher
  • Safari, latest version
  • Google Chrome, latest version
  • Android OS 8.0 or higher
  • Google Chrome, latest version

Please set your browser to use TLS 1.2 or higher when viewing the pages of this website.

JavaScript statement

Applicable law and court with jurisdiction

Except where otherwise specified, use of this website and the interpretation and application of these Terms and Conditions of Use shall be governed by the laws of Japan. Except where otherwise specified, the Nagoya District Court shall be the exclusive court of first instance for any and all disputes arising in connection with the use of this website.

page top
735, Shimotomi, Tokorozawa, Saitama, Japan 359-0001

NGK CHEMITECH is a member of the NGK Group.

NGK CHEMITECH and De Dietrich are in technical alliance in Glass Lining Technology.