NA 054
DIN Standards Committee Plastics
Technical rule
[CURRENT]
RAL-UZ 61
RAL-UZ 61
Basic Criteria for Award of the Environmental Label - Low-Emission and Energy-Efficient Gas Condensing Boilers
Title (German)
Vergabegrundlage für Umweltzeichen - Emissionsarme und energiesparende Gas-Brennwertgeräte