1, acid, corrosion resistance, aging, long service life. 2, using high-performance rubber seals flexible plug-type connection, good sealing performance, can effectively prevent water leakage, protect groundwater sources. 3, manholes and pipe joint motion, uniform settlement, to solve the problem of uneven settlement of traditional brick and plastic pipe connections well produced. 4, smooth wall smooth, easy dirt retention, reduce possibility of clogging the drainage performance is greatly enhanced. 5, light weight, easy to transport, all-weather construction, weather factors, the construction safety convenient, and lower total cost. 6, suitable for urban roads, highways, factories, utilities and living quarters of rain and sewage drainage projects.