... Model JD-2020 Frequency 20KHZ Output power 13KW Non Woven Filter Products Sewing Machine Applied range:Car tarpaulin, Car seat covers ... , quilt, mattress bed cover, cushion pillow, table mats table cloth, curtain shower curtain, cold gloves, baby mat moisture urinal pad ... , etc.. 1.The principle of operation of Non Woven Filter Products Sewing Machine Using high-frequency vibration wave propagation to ...