Terms & Conditions

NGK reserves the right to amend the following Terms and Conditions of Use. Please review the latest updates periodically. Use of these sites 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 invalid, in violation of laws or regulations, or otherwise inapplicable, all other Terms and Conditions shall remain applicable and binding.

Use of these websites

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


Copyrights and other rights to the information on these websites are owned by Niterra and the original holders of the copyrights or other rights. Duplication or plagiarism of any of the content published on these sites, in whole or in part, beyond the extent allowed for personal use or other uses permitted under the Copyright Act, is strictly prohibited. The information on these websites (i.e., textual information as well as logos, illustrations, audio, images, and website designs and layouts) may not be reused (including duplication, plagiarism, modification, redistribution, or rebroadcast) without the express consent of Niterra.

Copyrights to the KUROKO character appearing on these websites as Niterra's advertising character belong to Niterra and to TYO Inc., Dwarf Division. © Niterra, kero/dwarf


The Niterra name, Niterra logos, Niterra product names, and other names used on these websites are the trademarks or registered trademarks of Niterra (including those used under license from other companies). Other product and company names found on these websites are the property of the respective trademark owners. Any unauthorized reuse or reproduction of the trademarks and registered trademarks used on these websites is strictly prohibited.

Leading technology & innovation

Browse Products