... Roll size: 1.2m*1.65m Specification: TDPSD10, TDPSD20...TDPSD40 **Single-side drainage board:ModelMaterialColourThickness(mm)Weight(g/m2)Compression Strength(Kpa ... discharge. Either the function or the economic effect of the single-side drain board is better than other traditional architecture materials, such ... on highway sub grade, basement,tunnel,slope and other projects. Single-side drainage board