NA 172
DIN Standards Committee Principles of Environmental Protection
Technical rule
[CURRENT]
RAL-UZ 170
RAL-UZ 170
Basic Criteria for Award of the Environmental Label - Energy Services provided under Guaranteed Energy Savings Contracts
Title (German)
Vergabegrundlage für Umweltzeichen - Energiedienstleistungen mit Energiespar-Garantie-Verträgen