... protection of roadway, railway, river-way, dyke, and the hillside, etc.(2)Before the greensward grows, ... block slope protection. (5)Adopt polymer material and the ultravioresistant stabilizer, higher chemical stability, no ... cms( the distance ground), the sparse and loose earth's surface then should lengthen the nail length, ... take covering up the net mat as the lord.Doing not make the net mat expose ...