Responsible Mineral Sourcing

Unimicron adheres to the RBA CoC and Organization for Economic Co-operation and Development (OECD), ensuring that we and our customers avoid metals sourced from conflict zones, illegal mining, and unsafe conditions. We mandate that suppliers trace the origins of Conflict Minerals (3TG)—gold (Au), tin (Sn), tantalum (Ta), and tungsten (W)—to confirm they are not from conflict regions. Suppliers must also extend this requirement to their upstream sources. To reinforce our commitment, we require smelters to obtain certification from the Minerals Assurance Process (RMAP) and leverage market mechanisms to eliminate unethical practices.

All smelters and refineries of 3TGs used by Unimicron’s Taiwan and Mainland China Facilities hold RMAP certification and meet RBA requirements. In response to the Responsible Minerals Initiative (RMI) Standard, we have included "cobalt" in our conflict minerals management scope. This addition is actively promoted and incorporated into training materials. We require all suppliers and smelters of 3TG raw materials (gold, tin, tantalum, tungsten) to comply with RMAP certification and mandate that smelters handling "cobalt" either participate in the RMAP certification plan or obtain third-party certification. Additionally, we investigated other minerals such as mica, copper, nickel, and zinc, and shared the results with customers RMI's public format.

The Process of Mineral Management / OECD Due Diligence Framework for Risky Mineral Supply Chain