Efficient direct manufacturers modified fiber bundle. Efficient use of polymer fiber tow filter material. The material consists of Chinese Academy of Preventive Medicine and Environmental Hygiene monitoring polypropylene resin acute oral toxicity test, accumulation toxicity test, Ames test, CHL cell chromosome aberration test and harmful content, and the results for the non-toxic, no significant accumulation No mutagenicity, in line with China's relevant food hygiene standards. Um diameter filaments for grade (2.5dtex, 18dtex), its large filter surface area than the hard, easy to adsorption of colloidal suspension turbidity and impurities. Fiber surface adsorption of colloidal suspension turbidity and impurities. For: drinking water treatment (water, drinking water, pure water, high pure water) Industrial Water Treatment (electricity, chemicals, printing and dyeing, electroplating and other industries efficient filters) circulating water (pool water, aquarium water cycle, water park, artificial landscape, freshwater aquaculture) cooling water treatment (industrial cooling water, cooling water, cooling system to add water, cooling water treatment purification system side) directly treated sewage treatment (sewage or industrial waste water physicochemical / biological treatment effluent) water treatment ( miscellaneous water reuse, water treatment hotel accommodation area water)