International standard quality system from USA, is testing SONAKI's manufacturing system.

Korean Industrial Standard

Environmently friendly product mark received through passing the tests for water purifing function , quality and water saving effects.

UPC, American official organization for testing water supply and system,has finalized their approval on SONAKI system in April, 2002.

Vitamin C hand shower ia s mixture of 5 patented technologies.

Good design mark received for two consecutive years.