... ,colour:black or white 2,weight:from 100g-400g 3,material:PP ... the same time of preventing the clay granule from passing, it allows the water and the ... and the gravel of two kinds differentgranule pathway from the groundsill or other buildings. ReinforcementThe highway, ... thebottom, prevents the water and soil from being washed away.Unit weight, g/m2100150200250300350400450500600800Weight tolerance, %-8- ...