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Responsible Minerals Sourcing
Hamamatsu Photonics Group responsible minerals sourcing policy
Hamamatsu Photonics Group recognizes that problems with minerals such as tin, tantalum, tungsten, gold, cobalt, etc., including human rights abuse such as child labor, environmental destruction, and being a source of funding for groups involved in inhumane armed acts, are serious social issues throughout the supply chain for minerals from conflict-affected and high-risk areas including the Democratic Republic of the Congo and neighboring countries. From a CSR viewpoint, we set our policy aiming to contribute to solving such problems and are committed to promoting the following measures with our suppliers.
- We will promote the procurement of minerals solely from smelters certified as conflict-free under the Responsible Minerals Initiative (RMI*).
- We will establish our supply chain management framework to comply with OECD due diligence guidance.
- We will undertake corrective action measures promptly to reduce any identified risks. We will also examine concerns reported by customers, and take further actions such as sending a survey to our suppliers.
Established: March 1, 2021
Revised: April 1, 2024
Framework for responsible minerals sourcing
We have established a management system in which the Chief of Administration General Headquarters (Managing Executive Officer) is the chief executive officer. The Procurement Headquarters carries out a central role in policy, action plans and supplier surveys related to responsible minerals sourcing.
Surveys for responsible minerals sourcing
Our main products, such as photomultiplier tubes, imaging detectors and light sources, optical semiconductor devices, laser-related products, and system products incorporating these components, are widely used in minerals such as 3TG, cobalt, nickel, and copper. These minerals are essential materials for future product improvements and new developments in addition to existing products.
In light of the above situation, we conduct surveys for Responsible Minerals Sourcing at major suppliers. These surveys are conducted using the reporting template (CMRT, EMRT)published by RMI to trace the supply chain. We evaluate the reports we receive and manage additional investigations with suppliers as necessary.
We also implement activities Under the 5 Steps of “OECD Due Diligence Guidance for Responsible Supply Chains of Minerals from Conflict-Affected and High-Risk Areas
| STEP 1: Establish strong company management systems. | Hamamatsu Photonics establishes a company-wide policy, implements a supply chain due diligence program. |
|---|---|
| STEP 2: Identify and assess risks in the supply chain. | We conduct responsible minerals sourcing surveys of the suppliers using CMRT and EMRT templates created by the RMI. The procurement headquarters identifies and assesses risks from the information of RMI's certified smelter lists. |
| STEP 3: Design and implement a strategy to respond to identified risks. | If risks are identified, we notify the supplier concerned and carry out with the supplier to correct the situation. |
| STEP 4: Carry out an independent third-party audit of the smelter/refiner due diligence practices. | We use the results of the RMI's Responsible Minerals Assurance Program (RMAP*1) is assessments. |
| STEP 5: Report annually on supply chain due diligence. | We disclose information about responsible minerals sourcing activity in our Integrated Report and on our corporate website. |
*1 RMAP: Responsible Minerals Assurance Process
Major suppliers subject to this survey account for 90 % of the procurement amount for materials used in our products (excluding the consolidated subsidiaries).
Survey results (FY2025 (ended September 30, 2025))
CMRT survey results
- Survey Target: 216 suppliers (response rate: approx.93 % )
- Identified Smelters: 327 organizations (including RMI RMAP conformant (conflict free)smelters: 205 organizations)
- RMAP conformant Smelter Rate: 63 %
| Tantalum | Tin | Tungsten | Gold | Total | |
|---|---|---|---|---|---|
| Identified Smelters | 34 | 68 | 51 | 174 | 327 |
| RMI RMAP conformant (conflict free) smelters | 31 | 49 | 34 | 91 | 205 |
| RMI RMAP conformant (conflict free) smelters (Including certification in progress | 32 | 51 | 34 | 93 | 210 |
Note: For smelters that are not RMAP conformant, we continue to conduct corrective actions and verification.
EMRT survey results
- Survey Target: 216 suppliers (response rate: approx.92 % )
- Identified Smelters: 223 organizations (including RMI RMAP conformant (conflict free)smelters: 106 organizations)
- RMAP conformant Smelter Rate: 48 %
Note: For smelters that are not RMAP conformant, we continue to conduct corrective actions and verification.
Cooperation with Industry organizations
- Hamamatsu Photonics has joined the "Responsible Minerals Trade Working Group" organized by the Japan Electronics and Information Technology Industries Association (JEITA), actively collected information and promoted collaboration with industry organizations.
Reporting to Mitigate Mineral Sourcing Risks
We complies with the OECD's Due Diligence Guidance for Responsible Supply Chains of Minerals from Conflict-Affected and High-Risk Areas and accepts reports from suppliers concerning mineral sourcing risks.
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