Feb. 22 (Bloomberg) — Mitsubishi Rayon Co., a Tokyo-based unit of Mitsubishi Chemical Holdings Corp., reached an agreement to expand its water-treatment membrane operations in Vietnam.

The company, whose products include water-purification and wastewater-treatment systems, chemicals, carbon fibers and acrylics, said today in a statement that it entered into a pact with the Ho Chi Minh-based engineering company Greentech Environment to market hollow-fiber membranes for water-treatment equipment installed in hospitals, hotels, factories and other facilities. No terms were disclosed.

To contact the reporter on this story: Randall Hackley in London at rhackley@bloomberg.net

To contact the editor responsible for this story: Randall Hackley at rhackley@bloomberg.net