RO water purification technology - First Side Stream in the world.

A. O. Smith acquires State Industries, GSW, and Lochinvar. A. O. Smith becomes the Largest water heater company in North America

RO water purifier with the highest water recovery rate in the world.

Water purification equipment using the world's first advanced RO membrane roll. technology.

World's first non-pump RO water purifier with single RO membrane.

RO technology non-pump household water purifier with large capacity 125GPD.