
BS EN 15651-5. Sealants for non-structural use in joints in buildings and pedestrian walkways. Part 5. Evaluation of conformity and marking
出版:British Standards Institution

专家解读视频
BS EN 15651-5. Sealants for non-structural use in joints in buildings and pedestrian walkways. Part 5. Evaluation of conformity and marking
出版:British Standards Institution
专家解读视频