Ventilation for buildings - components products for residential ventilation - required and optional performance characteristics 建筑物通风.住宅通风用部件产品.必须的和可选的性能特征
2.
Ventilation for buildings - components products for residential ventilation - required and optional performance characteristics 建筑物通风.住宅通风用组件产品.要求的和可选的性能特征
3.
Ventilation for buildings - components products for residential ventilation - required and optional performance characteristics ; german version en 13142 : 2004 建筑物的通风.住宅用通风组件产品.必须和可选的性能