Applying Area of Best Price HDPE Smooth Geocell Grass Paver. 1.Be used for firm the roadbed of railroad; 2.Be used for firm highway soft foundation handling; 3.Be used for dike and retaining wall, which can bear load force; 4.Be used to harness the shoal water runway; 5.As pipeline and the sewer's propping up structure; 6.Be used for mixed type retaining wall that prevent the slope from