
Flexible sheets for waterproofing - Definitions and characteristics of underlays Part 1: Underlays for discontinuous roofing
出版:German Institute for Standardisation (Deutsches Institut f眉r Normung)

专家解读视频
Flexible sheets for waterproofing - Definitions and characteristics of underlays Part 1: Underlays for discontinuous roofing
出版:German Institute for Standardisation (Deutsches Institut f眉r Normung)
专家解读视频