In case this web site is used, it will be assumed that you are agreeing to the following conditions.

We may change the terms and conditions without notice. Please understand in advance that revised Terms and conditions will be applicable in such cases.

Optis is paying extreme attention to the information posted on this website, but it will be assumed that no responsibility for the following points.

Posted information being entirely correct, entirely safe and secure, entirely useful.   Posted information being always latest.   Any damages caused by the use of our website   without prior notice server will be stopped, information will be changed, offers will be stopped/discontinued. And any kind of damage that occurs thereby.
When the web site of our affiliated companies is visited through our website, please follow the terms and conditions of the corresponding company.
Protection of intellectual property rights
Information provided to you by our website, such as products, services technology etc., is protected as per industrial property law, intellectual property law and other relevant copyright laws. Visitors can use the authorized information only for their private purpose. The use beyond this(that includes reproduction, transmission, distribution, transfer, adaptation. The same below) requires explicit permission from our company.   Our trade names, trademarks and seal used on this website are protected by Trademarks Act, Unfair Competition Prevention Law and other laws. Without our clear consent, it cannot be used.
Prohibition act
The infringement to copyrights or other property rights of other visitors, third persons or company's industrial property.   The abuse, slander or a threat towards other visitors, third persons or towards our company.   The acts that could cause disadvantage or damage to other visitors, third persons or to our company.   The act that could undermine the credibility of our company or our website.   The act that takes advantage of business or other profit-making activity.   The act against the public order and morals such as profane and indecent conduct/statement.   Usage of harmful programs such as computer viruses or any act that could cause computer viruses.   The act that violates the laws and ordinances (including export-related laws and ordinances) or an act that could cause these violations.   Apart from the previous acts, any other act that violates our terms and conditions and adversely affect ours or third person's business, or any act that could cause violation to our terms and conditions.
Visitor’s Information offer
Authorized information will not be taken directly from the visitor, except in case it is demanded for visitor's secret or other proprietary information(that includes the ideas related to visitor's technical skills, marketing, commodity etc., Below it will be called as authorized information)   As there is no explicit declaration about responsibility, specifically regarding secrecy maintenance, even if such information is offered to us by the visitor, by any chance, please understand that we do not hold any responsibility to maintain secrecy of such information. Furthermore, our company has no responsibility for using or evaluating such information.
Disclaimer
As long as there are no separate provisions in terms and conditions for our other services, for the use of our website, our company does not take any responsibility for any of the customers and other third parties. In addition we do not guarantee at all, about the safety such as latest website content, accuracy, utility, adaptability for a specific purpose, functionality and other harmful computer viruses.   We are not responsible for any damage that occurs due to the change of our Terms and Conditions, and suspension of our website.   We are no way responsible for the websites that are accessed through hyperlinks in our website. This linkage does not mean that the companies corresponding to those links and our company is having relationship such as an associated company or client.
Governing Law and Jurisdiction
Japanese law will be applicable towards these Terms and Conditions and our website. In addition, disputes concerning these terms and our website shall be resolved by appropriate court(s) in Tokyo, JAPAN, will have the exclusive jurisdiction to settle all disputes arising thereof.