... 20KHz ultrasonic transducer unit; 3. Bottom mould fixed suspension structure;4. Single-motor speed adjustment system;5. Manual roller lifting system;6 ... various patterns of holes, and treatment of side melting;4. Slitting: Single or more cutting of the material at the same time ... plastic piece. such as nylon, polyster, ABC, PC, PVC, PE, PP, PS, etc.Application:Apply to lace clothing, ribbon,trim,Filter ...