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USI

USI Invests in Optical Transceiver Manufacturing Capacity and Launches the Expansion Plan for the Second Plant in Vietnam

December 17, 2025

USI (SSE: 601231), a subsidiary of ASE Technology Holding Co., Ltd. (TWSE: 3711, NYSE: ASX), has announced plans to invest in expanding its Hai Phong plant to achieve a monthly capacity of 100,000 units of 800G/1.6T silicon photonic-based optical transceivers. This expansion will include a fully integrated production line covering optical engines, transceiver assembly, and final testing. USI aims to follow market demand and expand its manufacturing capacity to meet customer needs.

In addition, USI plans to further expand its investment in Hai Phong. The company recently signed a memorandum of understanding (MOU) with Sai Gon–Hai Phong Industrial Park Corporation (SHP) at Trang Due Industrial Park in Hai Phong, Vietnam, outlining a preliminary intention to purchase land. The two parties will proceed with a formal agreement based on actual operational requirements. This marks the first step in USI’s plans to develop a second manufacturing facility in Vietnam.

For more information, please visit: https://www.usiglobal.com/en/news/expansion-plan-for-second-plant-in-vietnam

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