... sheet, drain sheet, drainage sheetThe HW-PEZ30(105) drain sheet is pouring plastic by PP; the surface is ... in the large-scale square; the golf course, HW-PEZ30(105) and the HW-PSS18(104) use together can enhance HW ... see (chart: structure of underground project roof)Product: HW-PEZ30(105)Color of under plate: Black/WhiteMaterial quality: PEQuality(g/): 3150Thickness ...