Open search panel Close search panel Open menu Close menu

To Our Suppliers

NTT has formulated the guidelines and decided on the requirements below in order to collaborate with suppliers and promote socially responsible procurement which is responsive to societal requests, for example, for environmental conservation and to ensure quality and safety necessary to provide a high level of service reliability.

Please observe all of the following when working with NTT.

NTT Guidelines for CSR in Supply Chain

NTT has defined the following guidelines for socially responsible procurement which is responsive to societal requests, for example, for human rights protection, environmental conservation, and product and service quality and safety.

NTT Guidelines for Green Procurement

The Guidelines for Green Procurement provide the general green procurement rules that NTT Group companies and suppliers must follow to help tackle environmental issues on an ongoing basis.

NTT Group's Approach to Conflict Minerals

Some of the minerals originating in the areas affected by conflict, such as the Democratic Republic of the Congo and adjoining countries, have been suspected of serving as a source of financing for violent armed groups, fomenting conflict and committing serious human rights abuses.

In this context, Section 1502 of the "Dodd-Frank Wall Street Reform and Consumer Protection Act" signed into law in the USA in July 2010 requires companies listed in the USA to disclose certain information regarding conflict minerals, including the extent to which they use conflict minerals originating in the Democratic Republic of the Congo or adjoining countries in their products. Under the Act, "Conflict Minerals" includes tantalum, tin, gold, tungsten and other minerals designated by the Secretary of State.

To continue to be socially responsible with respect to this issue, we are working with our suppliers to conduct procurement in a way that improves supply chain transparency and, in consideration of the Act, we are taking steps to avoid the use of Conflict Minerals, the proceeds from which could finance armed groups. At the same time, in view of the fact that areas affected by conflict also produce minerals that do not finance armed groups, we will work to implement our approach to procurement without hindering the use of these minerals.

We ask for the understanding of our suppliers and their cooperation with our surveys. We also ask that our suppliers endeavor to promote socially responsible procurement together with the NTT Group.

Technical Requirements

NTT procures high-quality products in order to respond to the advances in communications technologies in the global market. NTT provides documents describing the basic technical requirements for the telecommunication equipment as reference material for telecommunication system designers and manufacturers.

If you have any questions about the contents of these technical requirement documents, please contact the contact point indicated in the documents. Please contact to obtain technical requirement documentation.

GI optical fiber cords

1.5µm band SM optical fiber cords


ISDN (2B+D) digital circuit NTU