This line adopts microprocessor control, frequency conversion and silicone controlled DC governor, automatic belt change filter, advanced hot drawing oven and large L/D ratio etc. On the basis of absorbing foreign advanced techniques, the line has performance of high speed, large output, less energy consumption and forming high quality fiber drum. The technical index is up to international advanced level. It can be used in various flat fiber forming conversions of thermoplastic, such as PP, LDPE and HDPE etc.