PSD10 professional (103) of the floor drain is used at high temperature and high pressure made from polystyrene (HIPS). Resistance to high pressure for a long time, won't produce deformation. This kind of resistance to pressure for a long time not only can reduce the concrete slabs and the load weight, and is worth the inevitable during construction of outside pressure and impact, such as vehicles, workers trample of concrete and momentum. Keep the floor deformation for a long time, and thus can maintain the original displacement. Floor filter layer of geotextile purpose is to ensure that the drainage channel will not block by foreign substance, such as backfill soil particles or concrete. PSD10 drainage plate (103) on the drainage function and economic benefit are better than the traditional stone, ceramsite and drainage and other filter layer is superior and reliable. Applicable to the retaining wall, basement, tunnel, slope, planter, platform, etc. PSD10 (103) with functions of drainage, drainage plate in the retaining wall, basement, tunnel, and the highway subgrade slope protection applications.