Guan Kangmin filter plant was established in 1999, business is located in the Beijing-Tianjin corridor known as the reputation of Langfang City, is a research and development, production, sales and service in one of the modern corporation. Warehouse roof ESP (rapping PRINCIPLE warehouse roof ESP is the impact on the filter pore size and pore through adhesion effect based on cement, fly ash, slag, lime and other powdery materials, to design dust filter. works; rapping works.