
EN 15651-5. Sealants for joints in building construction. Definitions, requirements and evaluation of conformity. Part 5. Evaluation of conformity
出版:British Standards Institution

专家解读视频
EN 15651-5. Sealants for joints in building construction. Definitions, requirements and evaluation of conformity. Part 5. Evaluation of conformity
出版:British Standards Institution
专家解读视频