Japanese technology company Asahi Kasei announces that its Microza & Water Processing Division, which provides Microza hollow-fiber membranes for filtration and separation, received a Gold rating in the EcoVadis sustainability assessment conducted in June 2025. EcoVadis is a sustainability assessment company based in France that performs the review annually. This rating places the Asahi Kasei division among the top 5% of all entities assessed.

EcoVadis Gold Medal

Microza is used broadly in two areas: water treatment processes, such as water purification and wastewater/industrial water reuse; and industrial processes, including filtration and separation in biopharmaceuticals, pharmaceutical water, food, and industrial chemicals. By providing membrane technology for these applications, Asahi Kasei contributes to improved productivity, reduced environmental impact and effective utilization of limited water resources.

The EcoVadis assessment evaluates corporate sustainability initiatives across four categories: Environment, Labor & Human Rights, Ethics and Sustainable Procurement. This assessment targeted manufacturing at the Microza Fuji Plant and related supply and value chain activities. The Microza & Water Processing Division received particularly high marks in the Environment category.

EcoVadis ratings are based on international sustainability standards and have been awarded to over 150,000 companies across 185 countries and 250 industries. The EcoVadis evaluation has become a globally recognized benchmark for objectively assessing corporate sustainability efforts.

“Receiving this Gold rating is a significant milestone for our business and reinforces our commitment to supporting society through membrane and separation technologies,” says 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 is committed to promoting sustainability initiatives across all business areas. To maintain transparency and accountability, the organization publishes an annual sustainability report outlining activities and achievements.

Source: Asahi Kasei