Features plastic manhole (1), acid corrosion resistance, aging resistance, safe and reliable, long service life. Impact resistance, compression, abrasion resistance, stress cracking resistance, good chemical resistance, plastic manholes components using thermoplastic injection molded once, and by the National Chemical Building Materials Test Center tests. With the well cover and safety nets, when broken or stolen covers can effectively prevent human, vehicle safety. (2), seal the connection does not leak, prevent land subsidence plastic manhole connection is a flexible connection, flexible connection pipes and wells seat, clay pipes and wells jointly sport seats, a good solution to the traditional plastic pipes and manholes uneven connection problems arising from the settlement, effectively prevent ground subsidence. Connection flexibility, sealing, effectively prevent water leakage, avoid secondary pollution of groundwater, safety and environmental protection, to overcome the dust, sand gray harsh construction environment. But also to overcome the difficulties due to increased road and not duplicate inserted. (3), light weight, light weight carrying capacity, easy to transport and install, reliable performance, strong bearing capacity, fit and strong variety, can be adjusted in height and the cylinder bore drilling, adjust the direction, to meet project installation of all the needs. (4), efficient drainage, high emission efficiency. Efficient drainage, smooth wall smooth, water resistance, improve emission efficiency with diversion tank, easy dirt retention, reducing the possibility of clogging, has excellent drainage, rainwater and sewage discharge rate is the traditional manhole 1-3 times. (5), construction convenient, quick and easy work to improve the efficiency of the construction. Using sub-assembled structures, the wellbore can live cut, adjust, adapt to a variety of mounting depth requirements, reduce costs and greatly improve the construction schedule, shorten the construction period is 10 to 20 times more than traditional inspection wells; and all-weather construction, brick inspection wells and other wells with cement block masonry can not be compared. (6) and lower total cost, recyclable recycling and lower total cost, cost less to maintain than traditional manholes advantage, recyclable recycling, has a huge social benefits. (7), pipeline clean through easy maintenance of small plastic manholes easy maintenance, no cleaning up rubble, bricks and other debris that can clog pipes to prevent rain water, changing the traditional severe pipeline reinforced concrete manholes and manhole congestion . (8) with saving energy, in line with the sustainable development of the basic national policy of energy-saving way, with polymer resin as the main raw materials for processing, saving approximately 15,000 acres of farmland / year, saving about 750,000 tons of standard coal / year, in line with the sustainable development of the country The basic national policy.