Supply Chain Management

Basic Policy

The HOYA Group operates manufacturing facilities on a global scale and sells products to customers around the world by processing and assembling raw materials and components procured at the facilities in each country.
In order to boost corporate value in a sustainable manner, it is important to maintain product safety and quality at a high level, comply with laws and regulations and protect human rights not only within the Company but also throughout its supply chains. For this purpose, it is imperative to manage supply chains in an appropriate manner. Accordingly, major suppliers are required to sign and comply with the HOYA Supplier Code of Conduct; additionally, key suppliers are visited and examined periodically, and as necessary, provided with assistance to make improvements.

Supplier Code of Conduct

The HOYA Group seeks to apply a high level of legal compliance and ethical practices consistent with its legal and social responsibilities and duty to protect the basic human and worker rights of everyone in the organization.

We have also established the HOYA Supplier Code of Conduct that applies to all suppliers providing products and services to us. The Code requires our suppliers to adopt the same level of legal compliance and ethical practices as HOYA, and all our suppliers are asked to accept and comply with it before conducting business with HOYA.
Going forward, we will continue to work on suppliers so that we can obtain signatures from all of them. (Signature rate as at time of fiscal 2020 survey: Approx. 90%)

Supplier Audits

Key suppliers are audited, either periodically or as necessary, in accordance with the quality assurance system in each business segment.

Responsible Mineral Procurement

Conflict Minerals Survey
With the cooperation of its suppliers, the HOYA Group does not use any minerals sourced from the Democratic Republic of the Congo or its neighboring countries that are defined as conflict minerals in Section 1502 of the U.S. Dodd-Frank Act.

We request suppliers to comply with the HOYA Supplier Code of Conduct that sets out the above policy, and key suppliers to periodically cooperate in our conflict minerals survey* using the Conflict Minerals Reporting Template (CMRT), which is a template provided by the Responsible Minerals Initiative (RMI). Since fiscal 2020, we have been conducting the conflict minerals survey on a Company-wide scale by expanding its scope to include the Life Care business as well, not just the Information Technology business.

We will continue to engage in initiatives with the cooperation of suppliers, including initiatives to identify smelters so that the procurement source of minerals will be limited to smelters that are compliant with the Responsible Minerals Assurance Program (RMAP).

* Minerals subject to the survey: tantalum, tin, gold, tungsten

Conflict Minerals Survey Results and Targets

In the conflict minerals survey completed in fiscal 2022, we succeeded in maintaining a high survey response rate and improved the number and percentage of smelters compliant with RMAP. We are continuing to promote initiatives to reduce the risk of conflict minerals. For example, we work with suppliers to improve the accuracy of the survey and, in the event of non-response to the survey or failure to confirm RMAP-compliant smelters, we conduct additional surveys and request improvements as necessary. Going forward, we plan to conduct a survey of minerals other than 3TG*1, such as cobalt and mica.




Survey response collection rate*2




Identified smelters*3



Number of RMAP-compliant smelters*3



Percentage of RMAP-compliant smelters



Ongoing improvement

*1 Tantalum, tin, gold, tungsten

*2 The survey is conducted after selecting key suppliers subject to the survey according to the characteristics of each business.

*3 Some smelters are also included in the fiscal 2021 survey.