EN15651-4标准名称
EN 15651-4:2012 Sealants for non-structural use in joints in buildings and pedestrian walkways. Sealants for pedestrian walkways
...
EN15651-4标准名称
EN 15651-4:2012 Sealants for non-structural use in joints in buildings and pedestrian walkways. Sealants for pedestrian walkways
...