1. Application in the field of air purification: it is used for air purifier, as a sub-high-efficiency and high-efficiency air filter element, and as a coarse and medium-efficiency air filter with large flow rate. It has the advantages of small resistance, large strength, excellent acid and alkali resistance, corrosion resistance, stable efficiency, long service life and low price. There is no short fleece phenomenon in the purified gas. 2. Application in the field of medical and health care: made of melt-blown cloth dust mouth breathing resistance is small, not short, dust control efficiency is as high as 99%, widely used in hospitals, food processing, mining and other workplace to dust, prevent bacteria with anti-inflammatory analgesic membrane made of product after special treatment, permeability is good, non-toxic side effects, easy to use, and spun-bonded fabric of SMS composite products are widely used in the production of sanitary products such as surgical clothes. 4. Oil absorbent materials and industrial wipes: polypropylene melt spraying cloth made of various oil absorbent materials, oil absorption up to the weight of 14-15 times, widely used in environmental engineering, oil-water separation engineering, in addition, in industrial production, can be used as oil and dust clean materials. These applications give full play to the characteristics of polypropylene and the adsorbability of the ultrafine fiber produced by melting and spraying. 5. Thermal materials: the average diameter of fusion-sprayed ultrafine fiber is between 0.5 ~ 5m, the specific surface area is large, and a large number of fine pores are formed in the cloth with high porosity. There is a large amount of air stored in this structure, which can effectively prevent heat loss and has excellent thermal insulation. It is widely used in the production of clothing and various thermal insulation materials. Such as leather jacket, ski shirt, cold clothing, cotton village cloth, with light, warm, moisture absorption, good permeability, no mildew and other advantages.