Mitsubishi Chemical Taiwan, a member of the global chemical materials leader Mitsubishi Chemical Group, is launching an expansion plan for a second plant in Kaohsiung. Drawing on the Group's 80 years of experience in the R&D of ion exchange resin and leveraging 45 years of knowledge in local production in Taiwan, the newly established plant will focus on customized products for semiconductor UPW (ultrapure water) systems and Ready-to-Use pre-cleaned resin processing services. The goal is to satisfy demand and advance the development in the high-end water treatment market and build a stronger, more stable water treatment supply chain for Taiwan’s high-tech industry cluster.
Izuru Tokumaru, General Manager of the Ion Exchange Resin Division at Mitsubishi Chemical Taiwan, said that ion exchange resins are core materials for water purification, industrial catalysis, and refining processes as they are capable of reducing inorganic ionic impurities in water to ultra-trace levels -ppb (parts per billion) or even ppt (parts per trillion). With a portfolio of over 400 granular specifications, Mitsubishi Chemical leads the industry in particle size control and highly stable chemical structure designs.
As the AI industry grows rapidly, semiconductor fabs worldwide are actively increasing capacity. When planning in-fab ultrapure water systems, the quality and delivery time of ion exchange resins and polisher resins are considered critical. Tokumaru pointed out, "Taiwan's high-end semiconductor resins mainly depend on overseas supplies, making them vulnerable to oxidation and other quality risks during transit and long-term storage. To solve this pain point, Mitsubishi Chemical Taiwan underwent a comprehensive upgrade for products and services with the new plant. By introducing the group's advanced purification and pretreatment technologies, we perform final-stage cleaning and quality control locally. This allows semiconductor customers to directly load the resin and start operation immediately after purchase, significantly minimizing pre-rinse cycles and system risks.”
For many years, Taiwan Mitsubishi Chemical has been a reliable supplier to the power, petrochemical, food and medical, and electronic semiconductor industries. Aside from ion exchange resins, the company will also showcase its STERAPORE™ series of hollow fiber membranes made of PE or PVDF at the 2026 Taiwan International Water Week. The series features a high membrane area, automatic air venting, and powerful solid-liquid separation capabilities. It is widely used in MBR (membrane bioreactor) systems, industrial wastewater recycling and Mitsubishi Chemical's DiaFellow™ ZD—a water treatment system designed for Zero Liquid Discharge (ZLD). Customers will see a great reduction in their environmental burden while maximizing reclaimed water resources.
Tokumaru emphasized, “Our core competitive advantage lies in combining Mitsubishi Chemical’s globally renowned product quality control and R&D prowess with our local production experience and real-time technical support in Taiwan. Moving forward, the company will continue to collaborate closely with water treatment engineering partners and semiconductor clients to build a highly resilient and superior localized ultrapure water supply chain."