... the environment.(1)Replace the concrete, asphalt, and block, using in the slope surface protection of roadway, railway, river-way, dyke, and ... the erosion of the wind and rain (3)Form compound protection layer with the vegetable, standing the wash-out of the ... 1/8 of that of the wet masonry rock block slope protection. (5)Adopt polymer material and the ultravioresistant stabilizer, higher chemical ...