When juristic persons, groups and individuals sell the water equipment, sanitary ware or other equipment designated by the central authority-in-charge for domestic, a Water Efficiency Label shall be labeled on such equipment or ware.
The issuance, labeling, expiration, extension, revocation, cancelation, examination of sale and installation, and other regulations of a Water Efficiency Label pursuant to Paragraph 1 hereof shall be stipulated by the central authority-in-charge.
The type, scope, and effective date of the water equipment, sanitary ware or other equipment labeled with a Water Efficiency Label pursuant to Paragraph 1 hereof shall be announced by the central authority-in-charge.

The central authority-in-charge shall encourage the private participation in the research and development of water-saving technologies and stipulate the related incentives.