Melt-blowing head and method for making polymeric material fibrils

The sorting system comprises along the direction of the trolleys on the railway truck, and trolley are section is provided on the loading of the trolley operation direction or unloader. Each unloading the truck for producing a transmutability magnetic induction relating sensor comprises the; the magnetic sensing field can be arranged on the trolley such as antenna's detecting device function. The magnetic sensing field according is responded in surveying, and driving loading/discharging mechanism (e.g. a leather bag) is trolley by the loading or unloader.