With the high-speed development of today's society, all walks of life to build momentum has become increasingly strong. Under the call of the national sustainable development policy, \"energy conservation and environmental protection, practical and efficient\" has been more and more attention and consideration. Polymer plastic products, with its energy conservation and environmental protection characteristics and excellent performance, is leading the materials revolution new trend, for the sustainable development of human shape a green future. \"With plastic strip\" \"plastic and wood\" has become the global trend of material selection.

In today's society, rapid construction for the block sand pile for retaining walls and water seepage of water retaining walls, buildings and other infrastructure, play an important role in various fields. The traditional process of pile, technology of heavy and complicated, time-consuming, and structural weak. Surplus with polymer plastic sheet pile, it is a kind of pile foundation form of fast, efficient, environmental protection, material is qualitative light, high strength, good waterproof performance, flame retardant, anti-aging, corrosion resistance, uv protection, strong durability, the advantages of easy disassembly method installation, long service life, because of its