... )Voltage: 220V/50HZ/60HZ,1PSuitable material: terylene ear bandProducts dimension: standard form:175*95mm particular form ... , testing fastDesign:This is a principle of the use of ultrasound to make cloth, leather, plastics, ... of processing, ultrasonic auto-generated, In the ear to bring the formation of micro-amplitude high ... eliminating the negative impact of the use of glue. ear-loop mask machine