Asahi Kasei’s Microza® Wins Gold in EcoVadis Assessment

Japanese tech firm Asahi Kasei has announced that its Microza® & Water Processing Division, which delivers Microza® hollow fiber membranes for filtration and separation, has earned a Gold rating in the EcoVadis sustainability assessment conducted in June 2025. EcoVadis, a France-based global sustainability assessment organization, conducts this review annually. This distinction ranks the Asahi Kasei division among the top 5% of all rated companies.

Microza® membranes are widely utilized in two key areas: water treatment—including water purification and reuse of wastewater and industrial water—and industrial processing, such as filtration and separation in biopharmaceuticals, food, chemicals, and pharmaceutical water applications. Through its membrane technologies, Asahi Kasei supports greater productivity, environmental impact reduction, and efficient water resource utilization.

The EcoVadis sustainability evaluation measures efforts across four major areas: Environment, Labor & Human Rights, Ethics, and Sustainable Procurement. The 2025 assessment focused on Microza®'s Fuji Plant operations, along with supply chain and value chain activities. The division achieved especially strong scores in the Environment category.

EcoVadis ratings are grounded in recognized international sustainability standards and have been awarded to more than 150,000 companies in 185 countries across 250 industries. These evaluations are now a widely respected benchmark for assessing corporate sustainability objectively.

“Receiving this Gold rating is a significant milestone for our business and reinforces our commitment to supporting society through membrane and separation technologies,” said Satoshi Kobayashi, Senior General Manager of the Microza & Water Processing Division. “By strengthening technological innovation and global collaboration, we will continue to provide solutions that conserve safe and clean water resources while enhancing productivity in separation and concentration processes across various industries, creating new value for a more sustainable society.”

The Asahi Kasei Group continues to advance sustainability across its businesses and demonstrates its transparency and accountability through an annual sustainability report, which outlines its initiatives and accomplishments. Learn more at: Asahi Kasei Sustainability Report.