Ningbo Steel Co.,LTD. located in the Ningbo Beilun，on the brink of the East China Sea，and annual wind speed is greater than 4 s/m. Ningbo steel plant close to Beilun District，in gale conditions，materials field arising from a serious dust pollution，at the same time,a lot of materials was lost.The windproof wall on the materials field contracted by CERI eco Technology Co.,LTD. total length is 696 m and 15 meters high.It’s basis make use of concrete piles and support for the structural is steel tube truss structure.The net body of the wall is used the popular double-decker high-density polyethylene net,and it can be used more than 15 years.After it into used by Ningbo steel, dust pollution is eased and the ambient air quality of de Beilun district and plant has been to protect and improve.It is benefit for environmental, social and economic,this was reported by <Ningbo Daily>、<Ningbo Evening News> and Ningbo TV.