... , Reflectors compound machineThe principle of operationUsing high-frequency vibration wave propagation to be welded two or more surfaces, In ... conservation,high fusion, good conductivity, no spark, close to the cold processing.Technical parameterModel:NK-JM2012BFrequency:20KHZOutput power: ... waterproof and more warm.5.Using roller die,easy to change,and can sew many kinds of designs.and can ...